Science: What are the effects of heat gain or heat loss?

Dear pupils,

As mentioned by most of you that there is a change in the volume of the matter (When the matter expands, its volume increases. When the matter contracts, its volume decreases.)
Beside this, there are 2 more changes.

Are you able to list them?? 
(Clue: Related to how hot or cold an object is.)
(Clue: What will happen to an ice cube when it gains heat?) 


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Chloe, Dominic, Nicholas, Kang Jie, Lester, Karthika and Reuben, 

The early birds! Well done! A little gift is waiting for you!

Most of you have listed that matter expands when it gains heat and contracts when it loses heat. 

In another words, there is a change in the volume of the matter. When the matter expands, its volume increases. When the matter contracts, its volume decreases.

Beside this, there are 2 more changes. Are you able to list them? 
(Clue: Related to how hot or cold an object is.)
(Clue: What will happen to an ice cube when it gains heat?) 

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