Question

Write physical change or chemical change the process taking place..
1.rusting of iron
2.sawing of wood
3.boiling of water
4.making ice candy
5.cutting of paper
6.melting of sugar
7.making hard boiled
8.formation of cloud
9.cutting of finger nails
10.burning of paper

Answer 1

$\huge \rm{ \underline{required \: answer}}$

1. Rusting of iron $\longrightarrow$ Chemical Change.

2. Sawing of wood $\longrightarrow$ Chemical Change.

3. Boiling of water $\longrightarrow$ Physical Change.

4. Making ice candy $\longrightarrow$ Physical Change.

5. Cutting of paper $\longrightarrow$ Physical Change.

6. Melting of sugar $\longrightarrow$ Physical Change.

7. Making hard boiled $\longrightarrow$ Physical Change.

8. Formation of cloud $\longrightarrow$ Physical Change.

9. Cutting of finger nails $\longrightarrow$ Physical Change.

10. Burning of a paper $\longrightarrow$ Chemical Change.

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$\LARGE\rm{\underline{Additional\: Information:-}}$

• Slow chang is a change that takes place in a longer duration of time. A fast change takes place in a much shorter duration of time.

• Changes, which can be reversed, how to get back the original substance, are called reversible changes.

• Changes, which cannot be reversed, how to get back the original substance are called irreversible changes.

• In a chemical change, new substance, with different properties are formed.

• Physical changes are those changes in which no new substance is formed.

• Some changes, like the burning of fuels, in our surroundings, involve release of energy.

• Some other changes, like melting of ice, involves absorption of energy.

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Answer 2

Answer:

1-chemical change

2- physical change

3- physical change

4- physical change

5- physical change

6- chemical change

7- chemical change

8- chemical change

9- physical change

10- chemical change