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Grades 6, 7 and 8 - Science - Middle School - Compounds
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A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. 

 

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Grades 6, 7 and 8 - Science - Middle School - Compounds
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10 Questions

1. Which of these is NOT a compound?
2. The formula of methane is CH4. Which of these is true?
3. The correct formula for carbon tetrachloride is .......
4. The number of different elements in calcium carbonate (CaCO3) is .......
5. How many atoms in the formula CuSO4?
6. Which is the correct formula equation?
7. Which of the following could have been formed by reacting iron with sulfur?
8. The smallest particle of carbon dioxide (CO2) that still has the properties of carbon dioxide is called .......
9. Which of these word equations is INCORRECT?
10. A compound is a substance which contains .......

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