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McClinton, Debbie
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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
-
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 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
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
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
-
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
-
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
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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
-
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
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