Particle Basics
Everything around us is made of these tiny pieces.
Particles
When temperature increases, particles move ____.
Faster
When something gets larger and takes up more space, it does this.
Expands
More collisions with the container walls usually means higher or lower pressure?
Higher
Yes or no: A balloon is heated and gets larger. Did its particles get bigger?
No
True or false: Particles are always moving.
True
Cup A is warmer than Cup B. In which cup are the particles moving faster on average?
Cup A
When something gets smaller and takes up less space, it does this.
Contracts
Compressing a gas into a smaller space causes its pressure to do increase or decrease?
Increase
A basketball is left outside during a snowstorm. What happens to the speed of the air particles inside the ball?
They slow down
In which state of matter are particles generally farthest apart?
Gas
What happens to particle motion when a substance cools?
It slows down
Heating usually causes matter to expand or contract?
Expand
You push down on a sealed syringe. What happens to the space available to the gas?
It decreases
Air is squeezed into a smaller space in a syringe. What happens to the pressure?
It increases
Which state of matter has the lowest energy?
Solid
Model A shows slow-moving particles. Model B shows fast-moving particles. Which model represents the higher temperature?
Model B
Cooling usually causes matter to expand or contract?
Contract
Why does compressing a gas increase its pressure?
More collisions
A substance's particles are really close together and vibrate in place. What state of matter is it?
Solid
A student draws particles twice as large after heating. What should they change instead of particle size?
Particle spacing
A student says, “The particles in ice don't move.” What should you tell them?
They vibrate
A balloon gets smaller in a freezer. What happened to the gas particles?
They contracted
Container A has frequent particle-wall collisions. Container B has less frequent collisions. Which has greater gas pressure?
Container A
Why does heating gas increase its pressure?
Particles move faster