Name: ________________________
Chemical and Physical Changes 2.3
1. Categorize each of the following examples as a chemical, C, or physical, P
change.
_____ a. bending a metal rod
______ d. painting wood
_____ b. burning wood
______ e. cooking
_____ c. breaking glass
______ f. burning propane
2. Explain why dissolving is a physical change.
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3. Explain how a chemical change occurs when bread is baked.
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4. Compare physical changes and chemical changes with two differences.
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5. List four ways to detect that a chemical change has occurred.
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Name: ________________________
6. Mixtures can be separated by their physical properties because they aren’t
chemically combined. List three ways that a mixture could be separated and list the
property that would be used to separate it.
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7. Classify the following as either a chemical or physical change and give one reason
for your answer.
Sugar being dissolved in lemonade
Water boiling
Rust forming on metal
Egg frying
Fruit rotting
Paper being torn
8. Why can’t compounds be separated by their physical properties?
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9. The density of brass is 8.4 g/mL. If the mass of the brass is 510g, what is the
volume of the brass?
10. Water has a density of 1.00 g/mL. What mass of water would fill a tank that has a
height of 30.0 cm, a width of 50.0 cm, and a length of 100.0 cm?
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
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