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Douglass, Miriam
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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 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
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 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
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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 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
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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
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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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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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 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
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 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 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
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
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 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
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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
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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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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