Matter Vocabulary
Everything that has mass and takes up space
What is Matter
This state of matter has particles that expand to fill whatever space they are in. The particles move quicker and have large spaces between them
Gas
What is the solid state of water called?
Ice
What happens to a thing/subtance when you add heat/thermal energy?
The amount of matter in something
What is Mass
This state of matter has particles that move freely to take the shape of the space they are in.
Liquid
What is the boiling point/temp of water?
100 degrees celcius
What would cause the particles in something to contract?
A loss of heat/thermal Energy. Getting colder.
The amount of space something/a substance takes up
This state of matter usually has less volume than a liquid.
0 degrees celcius
True or false: Bridges, buildings and roads can all expand and contract depending on the temperature outside
True!- Did you now the eiffel tower can grow or shrink up to 6 inches per day depending on the temperature?
Phase Change
When a substance changes between solid, liquid or gas due to and increase/decrease of energy.
These 2 states are less dense than a solid (except ice)
True of False: Ice has a greater volume than liquid water.
True- When water freezes the particles create a grid structure forcing it to take up more space and increase in volume.
What could happen if an engineer doesn't design a bridge to allow it to expand and contract with the changing temperatures?
What is Density
How tightly packed the matter is a certain area. Example. 7 particles per 1 cm² is less dense than 20 particles per 1 cm², because there is less particles in the same amount of space.
What would you do if you wanted to cause a phase change from liquid to gas?
Add thermal energy, heat it up, etc.
True or False: Ice floats on water because it is more dense than the water.
False! For something to float on water it must be less dense than the water.
Name one way engineers do so to help bridges, buildings, and roads to handle thermal expansion and contraction.
Gaps in side walks, sliders or spacers on bridges, use materials that expand or contract at same rate, use flexible materials.