Matter & States
Anything that has mass and takes up space.
What is matter?
What happens to particle speed when temperature increases.
What is increases?
The formula for density.
What is mass divided by volume?
A push or a pull.
What is a force?
The law that explains the relationship between pressure and volume in gases.
What is Boyle’s Law?
The state of matter with a definite shape and definite volume.
What is a solid?
The state of matter where particles move freely and are far apart.
What is a gas?
The unit commonly used to measure density in solids.
What is g/cm³?
Work is done only when a force causes this.
What is movement?
When volume decreases, pressure does this.
What is increases?
A change of state when a solid turns into a liquid.
What is melting?
Why gases can be compressed.
What is because their particles are far apart?
An object with density 0.7 g/cm³ placed in water will do this.
What is float?
The force that slows objects down when surfaces rub together.
What is friction?
Why a balloon shrinks in cold air.
What is because particles slow down and collide less?
This process happens when a liquid turns into a gas at the surface.
What is evaporation?
Why ice melts faster in hot water than in cold water.
What is because hot water transfers heat energy faster?
Why oil floats on water.
What is because oil is less dense than water?
Why a ball stops sooner on grass than on a smooth floor.
What is because grass creates more friction?
Why heating a gas increases pressure.
What is because particles move faster and collide more often?
This change requires heat energy to be added to matter.
What is an endothermic change (such as melting)?
When heat is removed from matter, particle motion does this.
What is slows down and moves closer together?
Two objects have different masses and volumes. This determines whether they float or sink.
What is density?
The unit used to measure force.
What is a newton?
A bottle collapses when cooled because of this change inside the bottle.
What is decreased internal pressure?