1Question

# Melting micro-lesson

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## Learning time​

Kids learn by watching short, engaging video lessons.

So, melting is the process of changing something from a solid into a liquid and it's the opposite of freezing. So, when the temperature rises, it gets hotter, and the solid matter melts. The particles in the solid then loosen their bond to each other and then are able to move more freely around each other so the matter is then liquid and no longer solid. But it's important to remember that melting is the process of changing a solid back into a liquid. So, some solids cannot be changed into a liquid and when they're heated up, they have a completely different reaction to the heat. For example, paper will burn when heated so, therefore, cannot be melted. Now, the temperature at which something begins to melt is called its melting point. Now, ice is the solid version of water and the melting point for ice or water is 0 degrees. Other solids have very different melting points. For example, glass melts at an extremely high temperature at between 700 degrees and 800 degrees but metals will have different melting points. One example is lead. Lead melts at a temperature of about 327.5 degrees.

Kids earn more screen time by answering fun educational questions.

1) no
2) Yes
• #### Melting and freezing are .............. processes?

1) reversable
2) irreversable
3) permanent
4) random
• #### Melting is a

1) process
2) state of matter
3) temperature
• #### Melting is a process where which state of matter changes to which state of matter?

1) solid changes to liquid
2) Liquid changes to solid
3) solid changes to gas
4) gas changes to solid

1) Freezing
2) solid
3) liquid
4) cold
• #### What happens to particles from solids during melting?

1) Bonds loosen so they can move
2) get bigger
3) bonds tighten
4) shrink
• #### What happens to the temperature to cause melting?

1) rises (heats up)
2) falls (cools down)
3) stays the same
4) fluctuates
• #### What is the name for the temperature in which melting happens?

1) melting point
2) boiling point
3) liquid point
4) water

1) 0
2) 15
3) -10
4) 8

1) liquid
2) gas
3) water
4) solid

1) glass
2) ice

1) sugar
2) rubber
3) paper

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Our micro-courses are developed and delivered by qualified educators from around the world.

#### Georgina Mullin

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##### Freezing

Freezing is the process where a liquid changes into a solid. Freezing happens when an…

##### Evaporation

So, evaporation is the process where liquids change to a gas or vapor. Evaporation occurs…