Question 29
Plasticine is a colorful, soft, easily shaped modeling material made from petroleum jelly, calcium salts and aliphatic acid; the source says it contains no highly toxic materials. Which statements are correct?
1. Its volume changes when pressed.
2. Its volume does not change when pressed.
3. Its density is relatively high.
4. A new substance is formed.
5. Shaping plasticine is a physical change.
6. It is a chemical change.
A. 1, 2, 4
B. 1, 3, 5
C. 2, 3, 5
D. 2, 4, 6
1. Its volume changes when pressed.
2. Its volume does not change when pressed.
3. Its density is relatively high.
4. A new substance is formed.
5. Shaping plasticine is a physical change.
6. It is a chemical change.
A. 1, 2, 4
B. 1, 3, 5
C. 2, 3, 5
D. 2, 4, 6