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In this animated activity, learners examine muscle cell contraction and relaxation and consider the role of calcium ions.
- Subjects:
- Health Sciences, Rehabilitation Science, and Biology
- Keywords:
- Muscle cells Muscle contraction
- Resource Type:
- Others
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Others
In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.
- Subjects:
- Health Sciences and Human biology
- Keywords:
- Pulmonary gas exchange Respiratory organs
- Resource Type:
- Others
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Others
In this animated object, learners are introduced to the structure and function of animal cell organelles.
- Subjects:
- Biology
- Keywords:
- Eukaryotic cells Cytology
- Resource Type:
- Others
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Others
In this learning activity you'll study the structure of the cell membrane and construct it using the correct molecules.
- Subjects:
- Biology
- Keywords:
- Cell membranes
- Resource Type:
- Others
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Others
In this animated object, learners view molecules as they collide and move between two different solutions. They also observe what happens when the temperature of the solutions is raised or lowered.
- Subjects:
- Medical Laboratory Science and Biology
- Keywords:
- Cells
- Resource Type:
- Others
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Others
In this animated activity, learners examine the two major phases of cell division: mitosis and cytokinesis.
- Subjects:
- Medical Laboratory Science and Biology
- Keywords:
- Cytokinesis Mitosis Cell division
- Resource Type:
- Others
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Others
In this interactive object, learners select the correct description of a child in the five stages of development in the following categories: pattern of growth, vital signs, organ development, vision and hearing, and developmental stage.
- Subjects:
- Health Sciences and Human Biology
- Keywords:
- Child development
- Resource Type:
- Others
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Others
In this interactive object, learners examine the structure and function of the sense of taste.
- Subjects:
- Health Sciences and Human Biology
- Keywords:
- Taste
- Resource Type:
- Others
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Others
In this animated and interactive object, learners examine ABO blood antigens and Rh antigens and their compatibility.
- Subjects:
- Health Sciences, Human Biology, and Medical Laboratory Science
- Keywords:
- Bood groups
- Resource Type:
- Others
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Video
Bees have been rapidly and mysteriously disappearing from rural areas, with grave implications for agriculture. But bees seem to flourish in urban environments -- and cities need their help, too. Noah Wilson-Rich suggests that urban beekeeping might play a role in revitalizing both a city and a species.
- Subjects:
- Environmental Sciences and Biology
- Keywords:
- Honeybees
- Resource Type:
- Video
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Video
How do cancer cells grow? How does chemotherapy fight cancer (and cause negative side effects)? The answers lie in cell division. George Zaidan explains how rapid cell division is cancer's "strength" -- and also its weakness.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Cancer cells
- Resource Type:
- Video
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Video
The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which is a major contributor to cardiovascular disease and Type 2 Diabetes. But what are carbs, exactly? And what do they do to our bodies? Richard J. Wood explains.
- Subjects:
- Health Sciences and Food Science
- Keywords:
- Carbohydrates Nutrition
- Resource Type:
- Video
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Video
Sue Desmond-Hellmann is using precision public health -- an approach that incorporates big data, consumer monitoring, gene sequencing and other innovative tools -- to solve the world's most difficult medical problems. It's already helped cut HIV transmission from mothers to babies by nearly half in sub-Saharan Africa, and now it's being used to address alarming infant mortality rates all over the world. The goal: to save lives by bringing the right interventions to the right populations at the right time.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Medicial informatics Big data Public health
- Resource Type:
- Video
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Video
Can we make tattoos both beautiful and functional? Nanotechnologist Carson Bruns shares his work creating high-tech tattoos that react to their environment -- like color-changing ink that can tell you when you're getting a sunburn -- and shows exciting ways they can deliver real-time information about our health.
- Subjects:
- Health Technology and Informatics and Biology
- Keywords:
- Tattooing -- Health aspects
- Resource Type:
- Video
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Video
"For all that's ever been said about climate change, we haven't heard nearly enough about the psychological impacts of living in a warming world," says science writer Britt Wray. In this quick talk, she explores how climate change is threatening our well-being -- mental, social and spiritual -- and offers a starting point for what we can do about it.
- Subjects:
- Health Sciences and Environmental Sciences
- Keywords:
- Climatic changes -- Social aspects Mental health
- Resource Type:
- Video
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Video
Your lifelong health may have been decided the day you were born, says microbiome researcher Henna-Maria Uusitupa. In this fascinating talk, she shows how the gut microbes you acquire during birth and as an infant impact your health into adulthood -- and discusses new microbiome research that could help tackle problems like obesity and diabetes.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Microorganisms Medical genetics
- Resource Type:
- Video
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Video
The fruits and vegetables we buy from the grocery story have been bred to grow bigger and faster — but at the cost of flavor and nutrition, says John C. Trimble, co-founder of Foodscaping Utah. Instead of wasting precious water to maintain the grass in our yards, he suggests we "foodscape" them instead. Not only will our produce taste better, but they'll be grown as locally as possible.
- Subjects:
- Food Science
- Keywords:
- Vegetable gardening Horticulture
- Resource Type:
- Video
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Video
What if we could use biology to restore our balance with nature without giving up modern creature comforts? Advocating for a new kind of environmentalism, scientist and entrepreneur Emily Leproust rethinks modern sustainability at the molecular level, using synthetic biology to create green alternatives. From lab-developed insulin and disease-resistant bananas to airplanes made of super-strong spider silk, she explains how reading and writing DNA can lead to groundbreaking innovations in health, food and materials.
- Subjects:
- Biology
- Keywords:
- Biotechnology Bioengineering
- Resource Type:
- Video
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Video
Easy access to nutrients has contributed to the increase in obesity in the human population. But, what is obesity and why isn’t everybody fat? Dr. Stephen O’Rahilly provides a biomedical perspective of obesity, and evaluates which genes could potentially shift the balance towards obesity. As he explains, one becomes obese when the balance between energy intake and energy spent is shifted. Surprisingly, mutations that lead to obesity in humans aren’t in genes involved in metabolism and energy storage, but failure in satiety signals in the brain that result in people eating too much. The excess of energy intake over energy expenditure leads to obesity. What is the consequence of obesity in human health? Physically, obesity can result in lower mobility and sleeping disorders. But, in humans, the link between obesity and metabolic diseases isn’t straightforward. For example, not everyone that’s obese becomes insulin resistant. As O’Rahilly explains, the probability of an obese individual to have a metabolic disease is linked to the capacity of adipose tissue to store the extra fat. Mutations that decrease fat storage in adipose tissue increase the chance of metabolic diseases, like insulin resistance, even when the person is not obese.
- Subjects:
- Health Sciences and Biology
- Keywords:
- Obesity -- Genetic aspects
- Resource Type:
- Video
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Video
How does your genetic inheritance, culture and history influence your health? Biological anthropologist Lara Durgavich discusses the field of evolutionary medicine as a gateway to understanding the quirks of human biology -- including why a genetic mutation can sometimes have beneficial effects -- and emphasizes how unraveling your own evolutionary past could glean insights into your current and future health.
- Subjects:
- Health Sciences, Public Health, and Human Biology
- Keywords:
- Human genetics Health
- Resource Type:
- Video
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Others
In this interactive object, learners examine how to properly dilute hydrochloric acid.
- Subjects:
- Chemistry
- Keywords:
- Hydrochloric acid
- Resource Type:
- Others
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Others
Learners calculate gas density from the standard molar volume and observe how the density increases with the increasing molecular weight of the gas.
- Subjects:
- Chemistry
- Keywords:
- Natural gas -- Measurement
- Resource Type:
- Others
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Others
In this brief object, learners examine the direct relationship between the volume of a gas sample and the number of moles of gas. A problem is presented so students can test their knowledge of Avogadro's Law.
- Subjects:
- Chemistry
- Keywords:
- Natural gas -- Measurement
- Resource Type:
- Others
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Others
In this animated object, learners view hydrogen and hydroxide ions in a solution. A brief quiz on the basic principles of the term pH completes the activity.
- Subjects:
- Chemistry
- Keywords:
- Hydrogen-ion concentration
- Resource Type:
- Others
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Others
Learners view movie clips to determine the solubility of two ionic compounds. They also examine a solubility chart and predict the solubility of compounds.
- Subjects:
- Chemistry
- Keywords:
- Chemical reactions Solubility
- Resource Type:
- Others
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Others
Students solve a molarity problem in a drag and drop exercise.
- Subjects:
- Chemistry
- Keywords:
- Chemical reactions Solution (Chemistry)
- Resource Type:
- Others
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Others
In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.
- Subjects:
- Chemistry
- Keywords:
- Kinetic theory of gases Gas dynamics
- Resource Type:
- Others
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Others
Learners complete an exercise to match chemical formulas with the names of binary compounds, tertiary compounds, and ions.
- Subjects:
- Chemistry
- Keywords:
- Ionic structure Ions
- Resource Type:
- Others
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Others
Learners combine Boyle's Law and Charles's Law to solve for the pressure, volume, and temperature of a gas sample under two sets of conditions.
- Subjects:
- Chemistry
- Keywords:
- Boyle's law Charles' law Gas laws (Physical chemistry)
- Resource Type:
- Others
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Others
In this interactive object, students examine a type of chemical bond known as the "hydrogen bond."
- Subjects:
- Chemistry
- Keywords:
- Hydrogen bonding
- Resource Type:
- Others
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Others
In this interactive object, learners use the ideal gas law to solve a practice problem.
- Subjects:
- Chemistry
- Keywords:
- Gas laws (Physical chemistry)
- Resource Type:
- Others
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Video
Learners apply the principles associated with Boyle’s Law.
- Subjects:
- Chemistry
- Keywords:
- Boyle's law Gas laws (Physical chemistry)
- Resource Type:
- Video
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Others
In this interactive object, the learner practices identifying charges on ions.
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Others
Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.
- Subjects:
- Chemistry
- Keywords:
- Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
- Resource Type:
- Others
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Others
Learners observe that the volume of one mole of any gas is 22.4 L at standard temperature and pressure. An illustration shows that only the mass of the molar volume differs with the identity of the gas.
- Subjects:
- Chemistry
- Keywords:
- Gases Molecular volume
- Resource Type:
- Others
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Others
Learners view an animated presentation showing how the pH level of a cleaning solution is controlled in a closed-loop system in a manufacturing setting. A quiz completes the activity.
- Subjects:
- Chemistry
- Keywords:
- Hydrogen-ion concentration
- Resource Type:
- Others
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Others
Learners view an explanation of how to read a graduated cylinder by measuring the lowest portion of the meniscus. A quiz completes the activity.
- Subjects:
- Chemistry
- Keywords:
- Volume (Cubic content) Weights measures
- Resource Type:
- Others
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Others
Students identify the parts of a triple beam balance and practice measuring the mass of objects.
- Subjects:
- Chemistry
- Keywords:
- Weights measures Balances (Weighing instruments)
- Resource Type:
- Others
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Others
Learners follow a four-step process to determine the empirical formula of a compound from the masses of its constituent elements. The molecular formula is determined in a fifth step using the molecular weight of the compound.
- Subjects:
- Chemistry
- Keywords:
- Molecular weights Chemistry Physical theoretical
- Resource Type:
- Others
-
Video
Students use algebra to rearrange formulas and solve for the missing volume, density, or mass quantity.
- Subjects:
- Chemistry
- Keywords:
- Chemistry -- Mathematics
- Resource Type:
- Video
-
Video
In this animated and interactive object, learners examine the inverse proportionality of wavelength and frequency and their relationship to the speed of light.
- Subjects:
- Chemistry
- Keywords:
- Electromagnetic waves
- Resource Type:
- Video
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Others
In this well-illustrated object, learners examine the structures and properties of the four types of solids: molecular, metallic, ionic, and covalent network. Five interactive questions are provided.
- Subjects:
- Chemistry
- Keywords:
- Solid state chemistry
- Resource Type:
- Others
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Others
Ions are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).
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Video
Students read brief descriptions of atoms, molecules, elements, and compounds, and complete a matching exercise that pictures these particles and molecules as pieces of taffy.
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Others
Learners observe that the melting of a solid and the freezing of its liquid occur at the same temperature. The melting point is an intrinsic property and is used to identify a substance.
- Subjects:
- Chemistry
- Keywords:
- Melting points Freezing points
- Resource Type:
- Others
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Others
Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.
- Subjects:
- Chemistry
- Keywords:
- Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
- Resource Type:
- Others
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Others
In this animated object, students examine the role that the solubility of water plays in various biological functions.
- Subjects:
- Chemistry
- Keywords:
- Water chemistry
- Resource Type:
- Others
-
Video
In this screencast, students read about the basic organization and structure of the periodic table of elements. Students identify elements as belonging to a group, a period, or neither.
- Subjects:
- Chemistry
- Keywords:
- Periodic table of the elements Chemical elements
- Resource Type:
- Video
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Others
Learners view illustrations showing the direct dependence of the volume of a gas on temperature and consider the relationship between the Kelvin and Celsius temperature scales.
- Subjects:
- Chemistry
- Keywords:
- Temperature Low temperatures
- Resource Type:
- Others
-
Video
Learners examine the meaning of theoretical yield, actual yield, and percent yield. They test their knowledge by solving two problems.
- Subjects:
- Chemistry
- Keywords:
- Chemical reactions
- Resource Type:
- Video
-
Video
Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.
- Subjects:
- Chemistry
- Keywords:
- Carbohydrates Biomolecules Organic compounds
- Resource Type:
- Video
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Others
In this animated object, students examine the role equilibrium plays in everyday life. Formulas are presented in an interactive way.
- Subjects:
- Chemistry
- Keywords:
- Chemical equilibrium
- Resource Type:
- Others
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Others
Students examine standard pressure in this interactive object.
- Subjects:
- Chemistry
- Keywords:
- Boyle's law Gas laws (Physical chemistry)
- Resource Type:
- Others
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Others
In this colorful, interactive object, learners examine how materials on the nanoscale compare with those on the macroscale. The focus is on the difference between macroscale and nanoscale gold in both color and melting point.
- Subjects:
- Chemistry
- Keywords:
- Nanoscience
- Resource Type:
- Others
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Others
Learners read the definition of atomic weight and obtain the weights of elements by viewing the Periodic Table and charts that list atomic weights by name or symbol.
- Subjects:
- Chemistry
- Keywords:
- Periodic table of the elements Chemical elements Atomic weights
- Resource Type:
- Others
-
Video
Learners examine the method used to calculate the mass percent of an element in a compound. Three examples and one problem illustrate the method.
- Subjects:
- Chemistry
- Keywords:
- Chemistry -- Notation Chemical elements
- Resource Type:
- Video
-
Others
Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.
- Subjects:
- Chemistry
- Keywords:
- Heat -- Transmission Pressure Boiling-points
- Resource Type:
- Others
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Others
-
Others
Learners view an animation showing how the volume of a given quantity of gas varies directly with its temperature.
- Subjects:
- Chemistry
- Keywords:
- Charles' law Gas laws (Physical chemistry) Gase -- Thermal properties
- Resource Type:
- Others
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Others
In this animated and interactive object, learners follow two rules to write unit conversion fractions.
- Keywords:
- Metric system Units of measurement
- Resource Type:
- Others
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Others
Learners examine graphs and read that the heat of fusion is the heat energy absorbed by one mole of solid as it is converted to liquid, while the heat of vaporization is the heat energy absorbed by one mole of liquid as it is converted to gas.
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Others
Learners examine how the boiling point increases with increasing pressure. An example from industry is given.
- Subjects:
- Chemistry
- Keywords:
- Boiling-points
- Resource Type:
- Others
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Others
In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.
- Subjects:
- Chemistry
- Keywords:
- Charles' law Gas laws (Physical chemistry) Gase -- Thermal properties
- Resource Type:
- Others
-
Video
Learners identify combination, decomposition, displacement, and combustion types of redox reactions. They also watch a video clip that demonstrates the reaction of sodium and water.
- Subjects:
- Chemistry
- Keywords:
- Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
- Resource Type:
- Video
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Others
In this interactive object, learners calculate formula and molecular weights by working through five examples and two problems.
- Subjects:
- Chemistry
- Keywords:
- Molecular weights Atomic weights
- Resource Type:
- Others
-
Video
In this animated and interactive object, learners examine the properties of liquids, solids, and gases.
- Subjects:
- Chemistry
- Keywords:
- Matter -- Properties
- Resource Type:
- Video
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Others
Learners read definitions of atomic symbols, atomic numbers, and mass numbers and then answer questions about the number of neutrons, protons, and electrons in select elements.
- Subjects:
- Chemistry
- Keywords:
- Periodic table of the elements Chemical elements
- Resource Type:
- Others
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Others
Learners examine how vapor pressure is calculated. The vapor pressure of a liquid increases with increasing temperature. If the heat of vaporization and the vapor pressure at one temperature are known, the vapor pressure at a second temperature can be calculated.
- Subjects:
- Chemistry
- Keywords:
- Vapor pressure
- Resource Type:
- Others
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Others
Roman numerals are used to identify the charges on metal cations having multiple oxidation states. Five examples are provided for practice.
- Subjects:
- Chemistry
- Keywords:
- Ionic structure Ions
- Resource Type:
- Others
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Others
In this interactive and animated object, learners use solubility rules to predict when an insoluble ionic compound will precipitate in a double replacement reaction. Step-by-step examples are given.
- Subjects:
- Chemistry
- Keywords:
- Chemical reactions Solution (Chemistry)
- Resource Type:
- Others
-
Video
Atomic weights are used to convert the mass of a sample into the number of moles of the element in the sample and vice versa. Four examples are provided for practice.
- Subjects:
- Chemistry
- Keywords:
- Mole (Chemistry) Chemical elements Atomic weights
- Resource Type:
- Video
-
Others
Learners examine the method for calculating the atomic weight of copper from the natural percent composition of each of its two isotopes.
- Subjects:
- Chemistry
- Keywords:
- Chemical elements Atomic weights Copper
- Resource Type:
- Others
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Others
In this animated object, students are introduced to moles as a measurement.
- Subjects:
- Chemistry
- Keywords:
- Mole (Chemistry)
- Resource Type:
- Others
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Others
Learners convert units used to designate pressure. Units for pressure are atm, mm Hg, torr, and pascal.
- Subjects:
- Chemistry
- Keywords:
- Natural gas -- Measurement
- Resource Type:
- Others
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Others
Learners examine the meaning of oxidation, reduction, and half-reaction, and watch a film showing the deposition of copper metal from the reduction of copper (II) ion by aluminum. A brief quiz completes the activity.
- Subjects:
- Chemistry
- Keywords:
- Reduction (Chemistry) Chemical reactions Oxidation Oxidation-reduction reaction
- Resource Type:
- Others
-
Video
Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.
- Subjects:
- Chemistry
- Keywords:
- Acids Chemical reactions Bases (Chemistry)
- Resource Type:
- Video
-
Others
Vapor pressure is the pressure exerted by molecules in the gas phase in equilibrium with a liquid or a solid. Two examples are used to illustrate vapor pressure: the drying of clothes and the evaporation of ice.
- Subjects:
- Chemistry
- Keywords:
- Vapor pressure
- Resource Type:
- Others
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Others
Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.
- Subjects:
- Chemistry
- Keywords:
- Phase diagrams
- Resource Type:
- Others
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Others
In this screencast, learners examine the kinds of physical and chemical changes that occur in substances.
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions Physical sciences
- Resource Type:
- Others
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Others
In this animated object, students examine what happens when electrons share molecules.
- Subjects:
- Chemistry
- Keywords:
- Chemical bonds
- Resource Type:
- Others
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Others
Students examine atomic structure and the octet rule.
- Subjects:
- Chemistry
- Keywords:
- Molecular structure Chemical structure
- Resource Type:
- Others
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Others
In this animated object, learners examine the chemistry behind table salt.
- Subjects:
- Chemistry
- Keywords:
- Chemical bonds Molecular structure Chemical structure
- Resource Type:
- Others
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Others
Learners examine a table of common polyatomic ions. Eight examples are provided for practice.
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions
- Resource Type:
- Others
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Others
In this animated object, learners examine the formation of peptide bonds through dehydration synthesis.
- Subjects:
- Chemistry
- Keywords:
- Peptides -- Synthesis Amino acids
- Resource Type:
- Others
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Others
Learners use the coefficients in a balanced equation to develop the mole ratios of reactants and products involved in the reaction. Five interactive examples illustrate the method, and students test their knowledge by working four problems.
- Subjects:
- Chemistry
- Keywords:
- Chemical reactions Chemical equations
- Resource Type:
- Others
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Others
Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.
- Subjects:
- Chemistry
- Keywords:
- Thermodynamics Phase transformations (Statistical physics)
- Resource Type:
- Others
-
Video
In this interactive object, learners calculate the amount of heat evolved or absorbed in chemical reactions. Four practice problems are provided.
- Subjects:
- Chemistry
- Keywords:
- Enthalpy Thermochemistry
- Resource Type:
- Video
-
Others
Students read different definitions of "acids" and "bases." In an interactive exercise, they identify if a substance is an acid or a base.
- Subjects:
- Chemistry
- Keywords:
- Acids Bases (Chemistry)
- Resource Type:
- Others
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Others
Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.
- Subjects:
- Chemistry
- Keywords:
- Chemistry -- Mathematics Chemical structure
- Resource Type:
- Others
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Others
Learners examine how chemists use moles to "count" atoms by weight. Examples are given.
- Subjects:
- Chemistry
- Keywords:
- Mole (Chemistry) Chemical elements Avogadro's law
- Resource Type:
- Others
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Others
In this interactive object, learners determine the limiting reagent and the excess reagent in chemical reactions. Learners test their knowledge by solving three problems.
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions
- Resource Type:
- Others
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Others
Students practice identifying common elements from the periodic table by name or symbol.
- Subjects:
- Chemistry
- Keywords:
- Periodic table of the elements Chemical elements
- Resource Type:
- Others
-
Video
In this screencast we are introduced to the lab equipment used to contain and dispense chemicals.
- Subjects:
- Laboratory Techniques and Safety and Chemistry
- Keywords:
- Chemical laboratories Laboratories
- Resource Type:
- Video
-
Others
In this animated and interactive object, learners examine kinetic and potential energy as well as the first law of thermodynamics and the flow of energy between a system and its surroundings. Students also answer questions about exothermic and endothermic reactions
- Subjects:
- Chemistry
- Keywords:
- Chemical processes Chemical reactions
- Resource Type:
- Others
-
Video
In this animated and interactive object, learners observe how two, three, or four groups of electrons around the central atom cause the shape of the molecule to be linear, trigonal planar, bent, tetrahedral, or pyramidal. Seven examples and eight interactive questions are provided.
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Video
In this screencast, we review the positions of metals, metalloids, and nonmetals in the Periodic Table and the general characteristics of each.
- Subjects:
- Chemistry
- Keywords:
- Periodic table of the elements Chemical elements
- Resource Type:
- Video
-
Others
In this interactive lesson, students examine the quantitative relationship between chemicals in a balanced mathematical equation.
- Subjects:
- Chemistry
- Keywords:
- Stoichiometry
- Resource Type:
- Others
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Others
Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.
- Subjects:
- Chemistry
- Keywords:
- Boyle's law Gas laws (Physical chemistry)
- Resource Type:
- Others
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Others
In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.
- Subjects:
- Chemistry
- Keywords:
- Intermolecular forces Molecules
- Resource Type:
- Others
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Others
In this interactive and animated object, students distribute the valence electrons in simple covalent molecules with one central atom. Six rules are followed to show the bonding and nonbonding electrons in Lewis dot structures. The process is well illustrated with eight worked examples and two interactive practice problems.
- Subjects:
- Chemistry
- Keywords:
- Chemical bonds Valence (Theoretical chemistry)
- Resource Type:
- Others