Page 17 - Science Course 3 (Book 2)

Mo8-L1: Lesson Review Quiz (Multiple Choice)

Direction: On the line before each question or statement, write the letter of the correct answer.

1. Which situation represents a chemical change?
A. burning a pile of twigs
B. boiling water in a teakettle
C. washing the mud off a dirty car
2. Which statement describes the difference in energy between an ice cube and liquid water?
A. The particles in the ice cube have no energy.
B. The particles in the ice cube have more energy.
C. The particles in the liquid water have more energy.
3. Which change in matter can be reversed?
A. torn paper
B. broken rock
C. dissolved sugar
4. Which situation represents a physical change?
A. salt dissolving in water
B. a piece of metal rusting
C. twigs burning to become ash
5. A solid that sometimes forms when two liquids combine chemically is
A. an acid.
B. a solution.
C. a precipitate.
6. What does the law of conservation of mass state?
A. Chemical reactions destroy matter.
B. Chemical reactions don’t destroy matter.
C. Chemical reactions always create more mass.
7. After a log is burned, the mass of the ashes will be less than the mass of the log before it
was burned. Which statement best explains this fact?
A. The process of burning destroys some of the mass.
B. The process of burning converts some mass into a gas.
C. The process of burning creates ashes, which have less mass the wood.

Mo8-L1: Lesson Review Quiz (Short Answer)

Direction: Respond to each statement on the lines provided.

8. Identify two examples of a chemical change.

9. Explain the difference in particle energy between an ice cube and liquid water.

10. Identify a change in matter than can be reversed and explain why.

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