Carpenter made a chair using wood, what type of change is it?

What type of change is seasonal change and what type of change is change of milk into curd?

We use clay to make idols. Can we get back clay from the idol ? What type of change is it ? Explain.

What is rust and rusting? Why does iron rust ? What type of a change is this?

Ice convert((heat))to water convert((heat)) to water vapour . What type of change is it? Is it reversible? If so, how?

How do you produce large size of sugar crystals? What type of change is it?

What type of a change is crystallization ?

When a candle is burnt, what type of changes take place? Give another example of a similar process.

A piece of paper was cut into four pieces. What type of change occurred in the property of the paper?

a) If we dip the iron nail in the solution of copper sulphate, what changes can you observed? b) Write the chemical equation. c) What type of reaction it is?

Children put on compfire with wood on a festival day. Which type of reaction is it?