Question

this worksheet will help you do this. first, use the book to define the following terms.
vocabulary word | definition
physical property |
physical change | change in which the identity of the substance does not change
chemical property |
chemical change |

part one: physical or chemical property? fill in the chart using the vocabulary words or phrases provided.
vocabulary words
boiling point | ability to rust | melting point | brittleness | reactivity with vinegar
elasticity | flammability | density | transparency | ductility

each word is used once. define the word when done!
chemical property | definition
| - the ability to burn
| - reacts with oxygen to produce rust
|

physical property | definition
| - the property of letting light pass through something
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part two: physical or chemical change? indicate with a p or a c which type of change is taking place.

1. ______ glass breaking
2. ______ hammering wood together
3. ______ a rusting bicycle
4. ______ melting butter
5. ______ separate sand from gravel
6. ______ bleaching your hair
7. ______ frying an egg
8. ______ squeeze oranges for juice
9. ______ melting ice
10. ______ mixing salt and water
11. ______ mixing oil and water
12. ______ water evaporating
13. ______ cutting grass
14. ______ burning leaves
15. ______ fireworks exploding
16. ______ cutting your hair
17. ______ crushing a can
18. ______ boiling water

Explanation:

To solve Part Two, we determine if a change is physical (P, no new substance) or chemical (C, new substance forms):

1. Glass breaking: No new substance (P).
2. Hammering wood: No new substance (P).
3. Rusting bicycle: Rust (new substance, C).
4. Melting butter: State change (P).
5. Separating sand/gravel: No new substance (P).
6. Bleaching hair: Chemical reaction (C).
7. Frying an egg: Protein denaturation (new substance, C).
8. Squeezing oranges: No new substance (P).
9. Melting ice: State change (P).
10. Mixing salt/water: Dissolving (no new substance, P).
11. Mixing oil/water: No new substance (P).
12. Water evaporating: State change (P).
13. Cutting grass: No new substance (P).
14. Burning leaves: Combustion (new substances, C).
15. Fireworks exploding: Chemical reaction (C).
16. Cutting hair: No new substance (P).
17. Crushing a can: No new substance (P).
18. Boiling water: State change (P).

Answer:

1. P
2. P
3. C
4. P
5. P
6. C
7. C
8. P
9. P
10. P
11. P
12. P
13. P
14. C
15. C
16. P
17. P
18. P