Question

RE
NG
UNO
DING
Let's Remember
A. Fill in the blanks with the correct words.
1. Two or more chemical substances react to produce new substances in a
(physical/chemical) change.
2. Rusting being a
(chemical/physical) change, is
(temporary/permanent).
3.
(Carbon dioxide/Oxygen) gas turns freshly prepared lime water milky.
4.
(Iron oxide/Iron sulphate) is formed when copper sulphate reacts with iron.
5.
(Crystals/Chemicals) are the purest solid form of a substance having a
definite geometrical shape.​

Answer 1

Answer:

1 . chemical

2 .chemical , permanent

3 . CO2

4 . iron oxide

5 . crystal .