CATEGORY 1: WHAT IS MATTER?
Anything that has mass and takes up space.
What is matter?
All matter is made of tiny particles called these.
What are atoms?
The change of state from solid to liquid.
What is melting?
A substance that contains only one type of particle.
What is a pure substance?
A substance that contains more than one kind of particle.
What is a mixture?
The three main states of matter.
What are solid, liquid, and gas?
According to particle theory, particles are always doing this.
What is moving?
The change of state from liquid to gas.
What is evaporation?
A pure substance made of only one type of atom.
What is an element?
A mixture where you can see different parts mixed together.
What is a heterogeneous mixture?
The state of matter with a fixed shape and volume.
What is a solid?
Adding heat causes particles to do this faster.
What is move?
The change of state from gas to liquid.
What is condensation?
A pure substance made of two or more elements chemically combined.
What is a compound?
A uniform mixture where the parts are evenly mixed.
What is a homogeneous mixture (solution)?
This state of matter takes the shape of its container but has a fixed volume.
What is a liquid?
This explains why gases can be compressed easily.
What is there is space between particles?
The change of state from liquid to solid.
What is freezing?
This is an example of a compound made of hydrogen and oxygen.
What is water (H₂O)?
In saltwater, this substance does the dissolving.
What is the solvent?
This state of matter has no fixed shape or volume and spreads out.
What is a gas?
This particle theory rule explains why different substances behave differently.
What is different substances are made of different particles?
The change of state where a solid turns directly into a gas.
What is sublimation?
Gold (Au) is classified as this type of pure substance.
What is an element?
In saltwater, salt is called this.
What is the solute?