Question

a
. Write 'T' for true and 'F' for false.
1. Melting of chocolate is a reversible change.
2. Burning of candle is a physical change.
3. Breaking of glass is an irreversible change.
4. Hardening of cement is a physical change.
5. Stitching of clothes is a chemical change.​

Answer 1

Explanation:

1. True.
2. False.
3. True.
4. False.
5. False.

These are the rught answers bro

In 2nd no. it will be both true or false

because in burning of candle little bit amount of wax is exhausted so it will be both.

I think this will help you pleaseee mark it brainliast and follow me and don't forget to thanks me❤❤

Answer 2

$\huge{\underline{\tt{\green{Answer-}}}}$

1. Melting of chocolate is a reversible change. -

• True

2. Burning of candle is a physical change.

• False

3. Breaking of glass is an irreversible change.

• True

4. Hardening of cement is a physical change.

• False

5. Stitching of clothes is a chemical change.

• Flase

$\huge{\underline{\tt{\green{ Additional \:information }}}}$

Physical change - A physical change is a change in which chemical identical of the substance does not change.

• Physical change is a temporary change.

• No new substance is formed in a physical change.

• There is no change in chemical composition of the substance.

Example -

1. Melting of butter in a pan.
2. Dissolving salt in water.
3. Water boils to form steam.

Chemical change - A chemical change is a change in which a new chemical is identified or the substance changes.

• Chemical change is a permanent change.

• New substance is formed in a chemical change.

• There is always a change in the chemical composition of the substance.

Example -

1. Electrolysis of water.
2. An almirah gets rusted.
3. Burning of paper and wood.