What caused this chemical reaction?
A mixture of a reactive solid and liquid.
What happens to solids when you mix them?
They don't change. You can see the different parts and separate them easily.
What's the difference between water and ice?
Ice is a solid, water is a liquid.
Describe a mixture made of two solids.
Nice one! / How about...?
What happens when you mix some solids with a liquid?
They dissolve.
Can you separate the food coloring from the water? Why or why not?
No, they're both liquids.
What is a mixture?
Two or more things put together.
What mixtures are not easy to take apart?
Liquids and gases with similar densities.
What solids can completely dissolve in water?
Powders.