Question

Can you recognize the chemical and physical changes that happen all around us? If you change the way something looks, but haven’t made a new substance, a physical change (P) has occurred. If the substance has been changes into another substance, a chemical change (C) has occurred.

1. p An ice cube is placed in the sun. Later there is a puddle of water. Later still the puddle is gone.
2. Two chemical are mixed together and a gas is produced.
3. A bicycle changes color as it rusts.
4. A solid is crushed to a powder.
5. Two substances are mixed and light is produced.
6. A piece of ice melts and reacts with sodium.
7. Mixing salt and pepper.
8. A marshmallow is toasted over a campfire.
9. A marshmallow is cut in half.

Answer 1

Answer:

P = Physical Change

C = Chemical Change

1. P
2. C
3. C
4. P
5. C
6. C
7. P
8. C
9. P

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Answer 2

Answer:

1.)P

2.)C

3.)C

4.)P

5.)C

6.)C

7.)P

8.)P

9.)P