Question

Identify the following as physical (P) or chemical (C) changes.

1. NaCl (Table Salt) dissolves in water.
2. Ag (Silver) tarnishes.
3. An apple is cut.
4. Heat changes H2O to steam.
5. Baking soda reacts to vinegar.
6. Fe (Iron) rusts.
7. Alcohol evaporates.
8. Ice melts.

9. Milk sours.
10. Sugar dissolves in water.
11. Wood rots.
12. Pancakes cook.
13. Grass grows.
14. A tire is inflated.
15. Food is digested.
16. Paper towel absorbs water.

Answer 1

Answer:

1) Chemical

2) Chemical

3) Physical

4) Physical

5) Chemical

6) Chemical

7) Physical

8) Physical

9) Chemical

10) Chemical

11) Physical

12) Physical

13) Physical

14) Physical

15) Chemical

16) Physical

Answer 2

Explanation:

1) Chemical

2) Chemical

3) Physical

4) Chemical

5) Chemical

6) Chemical

7) Physical

8) Physical

9) chemical

10) physical

11) chemical

12) Physical

13) Chemical

14) physical

15) Physical

16) Physical