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Questions and Answers
What is a characteristic of physical changes?
What is a characteristic of physical changes?
- The original substance can be recovered. (correct)
- Heat energy is not involved.
- New substances are formed.
- Chemical properties are altered.
Which process is an example of a physical change?
Which process is an example of a physical change?
- Baking a cake
- Burning wood
- Rusting iron
- Melting ice cream (correct)
Which of the following statements about physical changes is false?
Which of the following statements about physical changes is false?
- No new substances are formed.
- Heat energy can be absorbed or released.
- The appearance of the substance changes.
- Physical changes involve chemical reactions. (correct)
In which physical change does a solid transition directly to a gas?
In which physical change does a solid transition directly to a gas?
What happens to the chemical composition of a substance during a physical change?
What happens to the chemical composition of a substance during a physical change?
Flashcards
Physical Change
Physical Change
A change in the physical properties of a substance, like its shape, size, or state, without changing its chemical makeup.
Melting
Melting
A physical change where a solid substance turns into a liquid.
Evaporation
Evaporation
A physical change where a liquid turns into a gas.
Freezing
Freezing
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Chemical vs. Physical Change
Chemical vs. Physical Change
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