- 1. True or false. In a physical change, the appearance of matter changes, but not its composition.
A) True
B) False
- 2. When a lake's water changes from liquid (water) to solid (ice) in the winter, a _____________ change has taken place.
A) physical
B) chemical
- 3. True or false. Cutting paper is a physical change.
A) False
B) True
- 4. True or false. Tearing a t-shirt is a physical change.
A) True
B) False
- 5. Which of the following demonstrate physical changes?
A) All of these are physical changes
B) grinding
C) cutting
D) tearing
- 6. ______________ is the opposite of melting.
A) Heating
B) Freezing
C) Cutting
D) Mixing
- 7. Gas changing into a liquid.
A) Condensation
B) Vaporization
C) Sublimation
- 8. Liquid changing into a gas.
A) Condensation
B) Vaporization
C) Sublimation
- 9. Solid changes directly into a gas.
A) Condensation
B) Sublimation
C) Vaporization
- 10. During a __________ change, substances are changed into new substances.
A) chemical
B) physical
- 11. Fireworks exploding is an example of a ___________ change.
A) physical
B) chemical
- 12. When an object permanently changes color, this indicates that a ___________ change has occurred. For example, when an apple turns brown after it has been exposed to air.
A) physical
B) chemical
- 13. True or false. When energy is released or gained a physical change has taken place.
A) False
B) True
- 14. If an egg has spoiled and now has an awful odor, you know that a ________________ change has taken place.
A) physical
B) chemical
- 15. During a ___________ change, the form of matter changes.
A) physical
B) chemical
- 16. True or false. The law of conservation of mass tells us that no matter if a physical or a chemical change takes place, the mass stays the same.
A) False
B) True
- 17. Who is the scientist that first tested the idea that mass is conserved regardless of chemical or physical changes.
A) Albert Einstein
B) Will Welser
C) Erin Wilkin
D) Antoinne Lavoisier
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