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Results for: Creator / Instructor Douglass, Miriam Creator / Instructor McClinton, Martin Keywords Chemical elements

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Atomic Weight

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

Percent Composition of Compounds (Screencast)

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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Atomic Symbols, Atomic Numbers, and Mass Numbers

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
Video

Conversion Between Mass and Moles of an Element (Screencast)

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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Calculation of Atomic Weight from Isotopic Composition

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
Others

The Mole and Avogadro's Number

Learners examine how chemists use moles to "count" atoms by weight. Examples are given.

Subjects:

Chemistry

Keywords:

Mole (Chemistry) Chemical elements Avogadro's law

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Others

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Atomic Weight

Percent Composition of Compounds (Screencast)

Atomic Symbols, Atomic Numbers, and Mass Numbers

Conversion Between Mass and Moles of an Element (Screencast)

Calculation of Atomic Weight from Isotopic Composition

The Mole and Avogadro's Number

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