Question

1. Heating of ice causing it to melt is
while heating of food to cook is
2. Melting of candle wax is
while burning of candle wax is
3. A paper folded to make a boat is
while a paper cut to make a boat is
4. Cooling causes things to
5. Liquids
more than solids on heating.
6. Metals
on heating
7. Gases
the most on heating.
change.
8. Growing up of a baby is an example of a/an
The changes that cannot be reversed are
9
B. Fill in the blanks :​

Answer 1

Answer:

hope it helps you mate.

Explanation:

1. physical, chemical
2. Physical, chemical
3. reversible, irreversible
4. Contract
5. expand
6. expand
7. burn
8. irreversible

Answer 2

Answer:

1.Heating of ice causing it to melt is

while heating of food to cook is melting point.

2.Melting of candle wax is physical change .

while burning of candle wax is chemical change

3.A paper folded to make a boat is physical change .

while a paper cut to make a boat is physical change .

4.Cooling causes things to evaporate.

5.Liquids expand on heating reason, but because the bonds between separate molecules are usually less tight they expand more than solids on heating.

6.Metals expands on heating.

7.Gases expand the most on heating. Chemicalchange.

8.Growing up of a baby is an example of a/an Growth involves change in the overall size of human body and a change in any one of the physical properties (like shape, size, colour, and state) is called a physical change. It is also a chemical change because it is a biochemical process regulated by hormones and enzymes. Human growth is a chemical change.

9.The changes that cannot be reversed are irreversible changes .

Explanation:

i hope it's helpful