Question

1. Chemical changes are (a) always irreversible. (b) mostly irreversible (c) always reversible (d) mostly

reversible.

2. Which of these is an irreversible change? (a) melting of ice (b) melting of wax (c) boiling of water (d)

burning of wax

3. Which of the following is a good conductor of electricity?

(a) wood (b) paper (c) iron (d) pure water​

Answer 1

Answer:

sorry ...I am an 8th grader...cant solve thi:)

Answer 2

Answer:

1. mostly irreversible

2. what is d option

3. d. pure water