Properties such as shape, size, colour and state of a substance are called its
Physical properties
Oops!
Check
Okay!
Check
5
The chemical name of baking soda is _________.
Sodium hydrogencarbonate
Oops!
Check
Okay!
Check
baam
Lose 10 points!
Oops!
fairy
Take points!
5
10
15
20
25
gift
Win 25 points!
Okay!
baam
Lose 25 points!
Oops!
5
Change no new substance is formed.
Physical Change
Oops!
Check
Okay!
Check
5
Magnesium (Mg) + Oxygen (O2) ---------
Magnesium oxide
Oops!
Check
Okay!
Check
5
Cutting a log of wood into pieces is a chemical change.
False
Oops!
Check
Okay!
Check
5
When carbon dioxide is passed through lime water, it turns milky due to the formation of _________.
Calcium carbonate
Oops!
Check
Okay!
Check
lifesaver
Give 20 points!
Oops!
shark
Other team loses 10 points!
Okay!
gift
Win 25 points!
Okay!
lifesaver
Give 5 points!
Oops!
5
Collect the chalk dust Add a little water to the dust to make a paste. Roll it into the shape of a piece of chalk. Did you recover chalk from the dust?
Reversible Change
Oops!
Check
Okay!
Check
5
Changes in which only _________ properties of a substance change are called physical changes.
physical
Oops!
Check
Okay!
Check
5
Changes in which new substances are formed are called _________ changes.
Chemical
Oops!
Check
Okay!
Check
5
Boil some water in a container. Do you see the steam rising from the surface of water? Hold an inverted pan by its handle over the steam at some distance from the boiling water. Observe the inner surface of the pan. Do you see any droplet o