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Worksheet
Curated OER

Chapter 2 and 3 Practice Worksheet - Formulas and Compounds

For Students 9th - 12th
In this formulas and equations worksheet, chemistry apprentices write the chemical formulas given the names. They calculate percent composition, balance equations, and calculate the mass of a substance present in a fertilizer. This is a...
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Unit Plan
CK-12 Foundation

Ck 12: Atomic Theory

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will explain the law of conservation of mass, the law of definite proportions, and the law of multiple proportions. They will also...
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Article
Other

Universe Today; What Is John Dalton's Atomic Model?

For Students 9th - 10th
Article explaining the legacy of John Dalton. His research into gases led to his gas laws and then his proposed atomic model. The flaws in his atomic theory are discussed also. (Jan. 20, 2016)
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Activity
Science Education Resource Center at Carleton College

Serc:interactive Study: Laws of Conservation of Mass and Definite Proportions

For Students 9th - 10th
Dalton's Playhouse is an interactive concept simulation meant to convey fundamental concepts in chemistry, including the law of definite proportions, the law of multiple proportions, and the law of conservation of mass.
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Unit Plan
CK-12 Foundation

Ck 12: Chemistry: Law of Multiple Proportions

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Explains the law of multiple proportions.
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Unit Plan
CK-12 Foundation

Ck 12: Chemistry: Mass Ratio Calculation

For Students 9th - 10th
[Free Registration/Login may be required to access all resource tools.] Explains mass ratio definition and mass ratio calculations.