12. Which is true about chemical change? a. It is reversible
b. It produces new materials.
c. It changes only a material's color and odor.
d. It does not change a material's size and shape.
13. An example of a chemical change is
a. an old car
c. throwing a rock
b. cutting a piece of paper
d. crushing a can
14. Which shows a chemical change?
a. Burning candle
b. Burning a piece or paper
c. Chewing a piece of bread
d. Melting a piece of chocolate
15. It is the primary cause of rust because it contains oxygen.
a. carbon dioxide
b. water car
d. hydrogen
16. Rusting of iron made materials is commonly caused by the a presence of heat
a. presence of oxygen
b. absence of heat
d. absence of oxygen
17. What change takes place when a fruit starts to rot?
a. chemical
b. no change
c. physical
d. physical
18. Which is NOT TRUE in the statements below?
a. Burning a paper involves a presence of heat.
b. Cutting a banana in half is an example of physical change. o. Melted candle is a form of chemical change.
d. Freezing a water is a form of physical change.
19. What change will happen if you slice an apple and expose it to oxygen in the air?
a. Color will change from brown to white b. Color will change from white to brown c. The color will not change
d. No changes in color
20. Kimberly wiped the top of the table with a wet piece of cloth. After a few minutes, the it became it dry. Why does the table dry up so quickly?
a. presence of heat e presence of water b. absence of heat
d. absence of temperature

Paki answer po brainliest ko yung mag aanswer ng tama​