Question

earrings 18
a. physical change
c. undesirable change
b. chemical change
d. irreversible change
2. When tomato soup is prepared
a. no new substance is formed
b. a new substance is forme
c. the change can be reversed
d. it is a physical change
3. When mozzarella cheese melts, it is
a. a reversible change
b an irreversible change
c. a physical change
d. a chemical change
4. A physical change is
a. always reversible
b. usually reversible
c. always irreversible
d. always desirable
5. Process due to which steam is converted into water is called
a. evaporation
b. condensation
c. boiling
d. sublimation
6. When a candle is lighted, following observations are made:
i. the candle burns
ii. size of the candle reduce
iii. wax melts
iv. melted wax solidifies
Which of the above changes are reversible?
a. ii. and iii.
b. iii. and iv.
c.i. and iv
d. ii. and iv.
fill in the blanks.​

Answer 1

Answer:

chemical change

a new substance is formed

a physical change

always reversible

evaporation

size of the candle reduce

i and iv

HOPE THE ANSWER HELPS YOU

Answer 2

Answer:

1. physical change

2.a new substance is formed. 3.a physical change. 4. always reversible. 5.condensation. 6.melted wax solidifies. 7.iii,iv