Question

39. State whether the following statements are true or false


a) when a candle burns, both physical and chemical changes takes place.


b) Anaerobic bacteria digest animal waste and produce biogas.


c) ships suffer a lot of damage through they are painted.


d) Stretching of rubber band is not a physical change.

​

Answer 1

Explanation:

a. False. only chemical change happens

b. True

c. True

d. False. it is a physical change

Answer 2

Explanation:

a) false

b) true

c) true

d)false..

.

..

..

.. hope it's right