Question

9. A chemical change involves
a. change of state only
b. change of colour only
c. change of state as well as composition d. none of these
10. An example of undesirable change is
a melting of snow on the mountain
b. evaporation of water
c. earthquake
d. flowering of a plant
Fill in the blanks :
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
8. Growing up of a baby is an example of a/an
change.
9. The changes that cannot be reversed are​

Answer 1

Answer:

9. A chemical change involves

a. change of state only

b. change of colour only

c. change of state as well as composition d. none of these

10. An example of undesirable change is

a melting of snow on the mountain

b. evaporation of water

c. earthquake

d. flowering of a plant

Fill in the blanks :

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

8. Growing up of a baby is an example of a/an

change.