Make Candy Glass Hearts! | A Valentine's Day Activity! | The Science of Cooking! | SciShow Kids

What is the process of recycling?

• Throwing away old items

• Taking something that's trash and turning it into something new

• Burning waste to create energy

• Collecting items for disposal in a landfill

What natural material is glass made from?

• Water

• Clay

• Sand

• Wood

What happens to sand grains when they are heated to a very high temperature?

• They turn into gas

• They become harder

• They melt and change from a solid to a liquid

• They break into smaller pieces

When melted sand cools down, what does it become?

• It turns back into sand grains

• It becomes a piece of glass

• It evaporates into the air

• It becomes a soft, moldable material