What is Matter?
What is matter?
Matter is anything that has mass and takes up space.
Describe the particle arrangement in solids.
Particles are packed tightly together with very little space between them.
What does Particle Theory explain?
It explains why matter behaves the way it does based on particles.
What is melting?
When a solid changes into a liquid.
What is a pure substance?
A solid, liquid, or gas that contains only one type of particle throughout.
Name a characteristic of matter.
All matter must have mass.
How do liquids differ from solids in terms of shape?
Liquids have no defined shape and take the shape of their container.
List one of the five major points of the Particle Theory.
All matter is made up of tiny particles
What do we call the process of a gas turning into a liquid?
Condensation.
What are heterogeneous mixtures?
Mixtures that are composed of different parts.
What is mass?
Mass is the measure of the amount of matter in an object.
What happens to gas particles when they are heated?
They move faster and spread apart.
What is true about the particles in a pure substance?
All particles in a pure substance are the same.
What is sublimation?
When a solid changes directly into a gas.
Give an example of a compound.
Water (H₂O).
Give an example of a large object that has low mass.
An inflatable beach ball.
What is the main difference in volume occupancy between solids, liquids, and gases?
Solids hold their shape, liquids take the shape of their container, and gases expand to fill the volume of their container.
What is the effect of adding heat to particles?
It makes particles move faster.
Describe what happens during freezing.
A liquid changes into a solid.
What do we call mixtures that are the same throughout?
Homogeneous mixtures.
What are the three states of matter?
Solids, liquids, and gases.
What happens to the motion of particles when they are cooled?
The particles slow down.
What is the space between particles like in matter?
There is space between all particles.
What is evaporation?
When a liquid turns into a gas.
Name a characteristic that distinguishes mixtures from pure substances.
Mixtures contain more than one kind of particle.