Y9 Particle Theory

A pure substance is

• A substance with only one type of particle
• Is a solid
• Has different particles mixed together
• Does not exist

When a substance is at it's melting point it is changing from ________ to __________

• liquid to gas
• solid to liquid
• gas to solid
• liquid to solid

What do we call the temperature at which a substance goes from liquid to gas?

• melting point
• freezing point
• boiling point
• absolute zero

All matter is made of tiny ______________

• elements
• pieces of energy
• bits
• particles

In the image below the container on the right contains what type of substance?

• Mixture
• blue
• Pure substance
• gas

Each colour of M&M is a different particle. Is this a mixture or a pure substance?

• Mixture
• Pure Substance

The Amount of space a substance takes up

• Density
• Mass
• Volume
• Weight

Anything that has mass

• The world
• matter
• density
• weight

The variable that you change in an experiment

• Independant variable
• Dependant variable
• Controlled variable
• X

The diagram below represents a_____________?

• Solid
• Liquid
• Gas