Heating Water
What happens to ice when it is heated?
It changes from a solid form to the liquid form of water.
What is the process called when water changes from liquid to gas?
Evaporation
What is condensation?
Condensation is when water vapor cools and turns into liquid water
What is a chemical change?
A chemical change cannot be undone
What is a physical change?
A change that doesn't change what the matter is composed of
At what temperature does water boil in Celsius?
100 degrees Celsius
Name a common example of evaporation.
Boiling water, a puddle after a rainstorm, a glass left out on a table
Give an example of condensation you see in everyday life.
Dew, outside of a cold glass, foggy windows
What happens to food when it is cooked?
It changes color and texture
What happens to water when it freezes?
It turns from a liquid to a solid
What state of matter is water when it is heated and becomes steam?
gas
How does temperature affect the rate of evaporation?
The higher the temperature, the faster the liquid evaporates.
What happens to water vapor when it cools?
It condenses into liquid water
Give an example of a chemical change that occurs when metal rusts
The oxygen and water cause the metal to rust over time
How can you change a solid back to a liquid?
Add heat
What happens to water when it freezes?
It turns from a liquid form into a solid form
What happens to water in a cup on a hot day?
It will evaporate
Why do you see water droplets on a cold glass?
The air around the cold glass condenses and becomes liquid water
How does burning wood change the material?
The wood turns color and becomes ash
What happens to the size of ice cubes when they melt?
They become smaller
Explain what happens to water when it is heated to 212 degrees Fahrenheit.
It changes from a liquid to a gas and becomes steam/water vapor.
Describe how evaporation is part of the water cycle.
Evaporation happens when liquid water is heated.
Explain the process of condensation in the water cycle
Condensation is when water vapor is cooled and turns into a liquid
Describe what happens to leaves when they decay
They become smaller, they get darker, and they dry out, eventually crumbling into pieces
Explain how mixing sand and water is a physical change.
The water can evaporate and the sand will remain.