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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
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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
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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
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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
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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
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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
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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
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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
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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
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Others
Learners examine a table containing the names of common cations and anions.
- Subjects:
- Chemistry
- Keywords:
- Ionic structure Ions
- Resource Type:
- Others
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Others
In this animated object, learners examine the formation of ester bonds in the synthesis of lipids using triglyceride biosynthesis as an example. Ester bond formation is described as a dehydration synthesis reaction.
- Subjects:
- Chemistry
- Keywords:
- Organic compounds Esters
- Resource Type:
- Others
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Video
Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.
- Subjects:
- Laboratory Techniques and Safety and Chemistry
- Keywords:
- Chemical laboratories Chemical laboratories -- Technique
- Resource Type:
- Video
-
Video
As we keep pumping carbon dioxide into the atmosphere, more of it is dissolving in the oceans, leading to drastic changes in the water's chemistry. Triona McGrath researches this process, known as ocean acidification, and in this talk she takes us for a dive into an oceanographer's world. Learn more about how the "evil twin of climate change" is impacting the ocean -- and the life that depends on it.
- Subjects:
- Environmental Sciences and Chemistry
- Keywords:
- Marine pollution Oceanography
- Resource Type:
- Video
-
Video
Jakob Magolan is here to change your perception of organic chemistry. In an accessible talk packed with striking graphics, he teaches us the basics while breaking the stereotype that organic chemistry is something to be afraid of.
- Subjects:
- Chemistry
- Keywords:
- Chemistry Organic
- Resource Type:
- Video
-
Video
You stick cookie dough into an oven, and magically, you get a plate of warm, gooey cookies. Except it's not magic; it's science. Stephanie Warren explains via basic chemistry principles how the dough spreads out, at what temperature we can kill salmonella, and why that intoxicating smell wafting from your oven indicates that the cookies are ready for eating.
- Subjects:
- Chemistry and Food Science
- Keywords:
- Food -- Composition Food -- Analysis
- Resource Type:
- Video
-
Video
Ever wondered how your smartphone works? Take a journey down to the atomic level with scientist Cathy Mulzer, who reveals how almost every component of our high-powered devices exists thanks to chemists -- and not the Silicon Valley entrepreneurs that come to most people's minds. As she puts it: "Chemistry is the hero of electronic communications."
- Subjects:
- Chemistry
- Keywords:
- Photolithography Chemistry Smartphones Telecommunication
- Resource Type:
- Video
-
Video
This channel contains a complete list of physics videos, as well as hundreds of chemistry, astronomy, math, and mechanical engineering videos. The physics videos explain the fundamental concepts of physics with some easy to follow examples on how to solve physics problems. The chemistry videos cover all the basic topics of chemistry, the astronomy videos explain the wonders of Earth and our Universe, and the math videos cover many topics in algebra, trigonometry, pre-calculus, calculus and differential equations.
- Subjects:
- Chemistry, Mathematics and Statistics, Cosmology and Astronomy, Physics, Mechanical Engineering, and Electrical Engineering
- Keywords:
- Chemistry Astronomy Electrical engineering Physics Mathematics Mechanical engineering Kalman filtering
- Resource Type:
- Video
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Video
Comparing initial rates to determine the order of reaction is a very common question in Kinetics.
Let's take a look at an example:
The objective is to choose a pair of experiments for comparison where the concentration of a reactant changes and ideally the concentration of other reactants remain constant. This means that any change in the initial rates of the experiments must be due to the change in the concentration of that reactant, and we can figure out the order from there.
1. Order of Reaction with respect to HCl
Comparing experiments 1 and 3, concentration of HCl doubles and there is no change in concentration of sucrose. So the change in initial rates must be due to HCl only. We can work out the change in initial rates to be 2 times. This means when concentration of HCl doubles, initial rate doubles. Therefore order of the reaction with respect to HCl will be order 1. For comparison, if order of reaction is zero, initial rate will remain unchanged when concentration of HCl doubles. If order of reaction is 2, initial rate will increase by 4 times (2^2 times) when concentration of HCl doubles. Since we only have 3 possible orders to consider, figuring out the order of reaction is quite straightforward.
2. Order of Reaction with respect to sucrose
Comparing experiments 1 and 2, concentration of sucrose increase by 1.5 times and there is no change in concentration of HCl. So the increase in initial rates by 1.5 times must be due to sucrose only. Since this is a proportionate increase, order of reaction with respect to sucrose is also order 1. Finally we can write out the rate equation for this reaction to be: rate = k [HCl][sucrose]
- Course related:
- ABCT 2701 Analytical Chemistry
- Subjects:
- Chemistry
- Keywords:
- Chemistry Physical theoretical
- Resource Type:
- Video
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e-journal
In this journal platform, you can find the articles which published under the Creative Commons Attribution-NonCommercial 4.0 International License. The journal covers a various disciplines, including:
Biomedical & Life Sciences
Business & Management
Chemistry & Material Science
Computer & Communications
Earth & Environmental Science
Engineering
Humanities
Physics & Mathematics
Social Sciences
- Subjects:
- Management, Physics, Chemistry, Computing, Mathematics and Statistics, Biology, and Environmental Sciences
- Keywords:
- Industrial management Computer science Management Physics Mathematics Social Sciences Chemistry Engineering Environmental sciences Humanities Biology
- Resource Type:
- e-journal
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e-journal
"SciDoc Publishers" is an Open Access publisher established with a sole motive to disseminate knowledge among the scientific community. The journal including the disciplines:
Aerospace Research
Health Science & Medicine
Behavioral Research & Psychology
Food Science
- Subjects:
- Health Sciences, Environmental Sciences, Medicine, Chemistry, Food Science, Biology, Physics, and Aeronautical and Aviation Engineering
- Keywords:
- Science Periodicals Medicine Technology
- Resource Type:
- e-journal
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e-journal
Maxwell Scientific Publication Corp. operates as an independent science and technology publisher with a global reputation for quality products and services to contribute to the advancement of research knowledge. In this journal platform, you can find the articles which published under the open license. The journal including the disciplines:
Agricultural Sciences
Business Management & Economics Computer & Information Technology
Engineering
Food Science and Technology
Mathematics
Medicines
Social Sciences
- Subjects:
- Health Sciences, Environmental Sciences, Physics, Economics, Chemistry, Computing, Mathematics and Statistics, Biology, Management, Medicine, and Food Science
- Keywords:
- Statistics Science Periodicals Industrial management Food science Agriculture Fisheries Medicine Mathematics Life sciences Economics Technology Dairying Social sciences Environmental sciences Engineering Aquatic sciences Information technology Food industry trade
- Resource Type:
- e-journal
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e-journal
In this journal platform, you can find the articles which published under the open license. The journal including the disciplines:
Biomedical & Life Science
Business & Economics
Chemistry & Materials Science
Computer Science & Communication
Earth & Environmental Science
Engineering
Medicine & Healthcare
Physics & Mathematics
Social Science & Humanities
- Subjects:
- Health Sciences, Environmental Sciences, Physics, Economics, Chemistry, Computing, Mathematics and Statistics, and Biology
- Keywords:
- Science Periodicals Industrial management Computer science Physics Mathematics Life sciences Economics Technology Chemistry Social sciences Environmental sciences Engineering Materials science Medicine
- Resource Type:
- e-journal
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e-journal
In this journal platform, you can find the articles which published under the open license. The journal including the disciplines:
Biological Sciences
Medicine
Case Reports
Physical Sciences
Social Sciences and Education
Mathematics, Engineering, and Computer Science
- Subjects:
- Medicine, Chemistry, Computing, Mathematics and Statistics, Biology, and Physics
- Keywords:
- Science Periodicals Computer science Physics Mathematics Education Technology Social sciences Environmental sciences Engineering Biology Medicine Physical sciences
- Resource Type:
- e-journal
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e-journal
Estonian Academy Publishers issues seven open access scientific journals, peer-reviewed, indexed and abstracted in international review publications and databases. All journals have an international Editorial board. Publications of the Estonian Academy Publishers cover almost all important areas of contemporary science. Our journals are peer reviewed and recognized by the Estonian Research Council and the Estonian Committee of Science Compentence as journals meeting international scientific standards.
- Subjects:
- Environmental Sciences, Physics, Chemistry, Archeology, Mathematics and Statistics, Biology, and Foreign Language Learning
- Keywords:
- Science Periodicals Uralic languages Ecology Mathematics Archaeology Technology Chemistry Social sciences Europe -- Baltic Sea Region Engineering Humanities Geology History Physics
- Resource Type:
- e-journal
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e-journal
Edorium journals is one of the leading academic publishers of open access journals. It publishes peer reviewed journals and international journals in fields including basic sciences, medical specialties and surgical specialties. You can refer the open access journals list on Edorium Journals to know the sub-specialties under which scholarly articles can be published here. It covers a variety of disciplines including medicine, science, humanities, technology, chemistry, arts, biology, engineering, management, physics, cancer research, neuroscience, genetics, immunology and infection, environment, developmental biology, bioengineering, clinical skills, biochemistry, behavior, psychology, and many more.
- Subjects:
- Environmental Sciences, Physics, Chemistry, Psychology, Biology, and Medicine
- Keywords:
- Science Periodicals Arts Physics Technology Chemistry Social sciences Environmental sciences Engineering Humanities Biology Medicine
- Resource Type:
- e-journal
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