Solids and Liquids Mix with Water in Different Ways
What happens when you mix sand with water?
Sand does not dissolve in water; it settles at the bottom.
Why do some solids dissolve better in hot water?
Hot water has more energy, which helps break down the solid.
What are the three main states of matter?
Solid, liquid, and gas.
What is it called when a liquid turns into a gas?
Evaporation
How does salt behave when mixed with water?
Salt dissolves in water.
What is it called when a solid breaks down into tiny pieces and spreads out in water?
This process is called dissolving.
Give an example of a solid that dissolves better in hot water than in cold water.
Sugar dissolves better in hot water.
What happens to water when it freezes?
It turns into ice, which is solid.
What happens when ice melts?
It turns into liquid water.
What happens to sugar when it is added to water?
Sugar dissolves in water.
Can you name a solid that mixes well with water?
Sugar is a solid that dissolves well in water.
What can you do if a solid does not dissolve in cold water?
Try heating the water to see if it dissolves better.
What state of matter has a definite shape and volume?
Solid.
Can you name a solid that can be melted?
Chocolate can be melted.
Can you mix cornstarch with water? What is the result?
It creates a thick mixture that behaves like a solid and liquid.
What happens when you mix oil with water?
Oil does not mix with water; it forms separate layers.
What could happen if you add salt to hot water?
The salt will dissolve quickly in hot water.
Name a gas that we breathe.
Oxygen.
What is evaporation?
The process where liquid turns into vapor.
What is it called when water molecules stick to each other?
Cohesion.
How do you know if a solid dissolves in water?
If you can't see the solid anymore, it has dissolved.
How can you test if a solid dissolves better in hot or cold water?
Perform an experiment by mixing the solid in both hot and cold water and observing the results.
What is the process of changing from a solid to a liquid called?
Melting.
What is condensation?
The process where gas turns back into liquid.
What happens to food coloring in water?
It spreads out and mixes evenly with the water.