1.

Can you think of any material other than ice that goes from solid to liquid, liquid to gas (vapour)?

Answer»

1. Many materials change their state from solid to liquid and from liquid to gas. 

2. Ghee at slightly low temperature will be in solid state. 

3. If it is heated it comes to liquid state and on further heating it becomes vapour.

Another example:

1. At room temperature candle wax will be in solid state (candle). 

2. When it is lighted it starts burning and liquid wax is seen at the wick of the candle. 

3. The white smoke on the top of the wick is wax vapour.



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