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Understand How Materials Change When Heated

In this worksheet, students will be asked to consider the effects of heating different materials and how they change.

'Understand How Materials Change When Heated' worksheet

Key stage:  KS 2

Year:  Year 4 Science worksheets

Curriculum topic:   States of Matter

Curriculum subtopic:   Heating and Cooling

Difficulty level:  

Worksheet Overview

You use lots of materials every day.


What happens when some of them are heated? Do they change? How? What's left?


For example, you know that when butter is heated in a pan it melts into a liquid.


Melting butter


You know that the metal pan itself doesn't change - it just gets hot.

Metals need to get a great deal hotter to change - that makes them ideal for making saucepans.


If you took the pan off the heat and left it to cool, you would expect to see the butter solidify back into solid butter - that's called freezing, even though it's still fairly warm (you just have to stop for a moment ... and think about that!).


What if you continued to heat the molten butter?  It would boil and, if you kept on heating, it would change into a brown sticky mess!


boy pulling silly face


So, in this activity, we have several materials for you to think about and decide if they change and how they change. 


Here's another example: what happens when you heat a piece of bread? You get toast - yum!


jam on toast


Let's have a go at the questions now - if you're not too hungry!

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