Printable answer key
Chemistry Matter and Atoms
Use this answer key after players complete the quiz or when reviewing a printed worksheet.
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1. What is matter?
Correct answer: A. Anything with mass and volume
Explanation: Matter is anything that has mass and takes up space.
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2. What is an atom?
Correct answer: A. A tiny unit of matter
Explanation: Atoms are tiny units that make up matter.
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3. What is a molecule?
Correct answer: A. Two or more atoms bonded together
Explanation: A molecule forms when two or more atoms are bonded together.
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4. Which state of matter has a fixed shape and volume?
Correct answer: A. Solid
Explanation: A solid usually keeps its own shape and volume.
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5. What happens during melting?
Correct answer: A. A solid changes to a liquid
Explanation: Melting is the change from solid to liquid.
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6. Which is an example of a mixture?
Correct answer: A. Trail mix
Explanation: Trail mix is a mixture because different substances are physically combined.
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7. In salt water, what is the salt?
Correct answer: A. Solute
Explanation: The solute is the substance dissolved in a solution. Salt dissolves in water.
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8. Which number on the pH scale is neutral?
Correct answer: A. 7
Explanation: A pH of 7 is neutral, like pure water at room temperature.
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9. What is a sign that a chemical reaction may have happened?
Correct answer: A. New gas bubbles form
Explanation: Gas bubbles, color change, heat, or a new substance can indicate a reaction.
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10. What does the periodic table organize?
Correct answer: A. Chemical elements
Explanation: The periodic table organizes chemical elements by their properties and atomic numbers.