Vocabulary
Matter
Anything that has weight and takes up space
T/F all matter has mass
True
Solid
the particles are close together and vibrate in place
Why is air considered matter even though you can't see it
Air still has mass and volume
When you freeze a popsicle, does it's mass change? Why or why not?
Particle attraction
The force that draws particles closer together
T/F Liquids have a fixed shape
false
Liquid
The particles are separated by spaces and can slide past each other.
In non water liquids, If you dropped a solid made out of the same substance into it, would it sink or float? Why
It would sink because in non water substances the solid form of a substance is denser, meaning the particles are closer together.
Why does concrete crack in alberta?
The concrete expands and contracts when temperature changes because the particles become more or less densely organized
Mass
How much something weighs
T/F Gasses have stronger particle attraction than solids
false
Gas
The particles are separated by large spaces and are constantly moving in all directions.
Name all 3 states of matter and describe how their particles are arranged
Solid: Close together, vibrating against each other, dense
Liquid: Sliding past each other, further apart, less dense
Gas: Spread far apart, not dense
What happens to the coloured liquid in a thermometer when it gets warmer? Why
It expands and rises because the particles are moving faster and farther away from one another.
Volume
How much space something takes up
What is a phase change? Give an example
When matter changes into a different state like liquid to solid, or liquid to gas. For example ice melting and freezing
Heating an object
particles get further apart and move faster, the object becomes less dense and expands
Why can you easily squeeze a balloon but not a rock?
The gas inside the balloon can be compressed but solid rock can not easily be compressed.
Why is it important that ice freezes on TOP of lakes and other bodies of water?
Density
how closely packed together a substance's particles are
What units can be used to measure volume
Liters or cubic units
Frozen water
The particles move further apart, the water becomes less dense and expands
Why do soccer balls deflate when you play with them outside when it is really cold?
Because the particle attraction increases and the air particles become more densely organized causing the air in the ball to contract and deflate the ball.
Does ice sink in water? Why?
Because frozen water is less dense than liquid water, when water freezes it's particles move further away from eachother in a rigid pattern