Year 9 - Test answers

Which of these is NOT a part of particle theory of matter?

• All matter is made up of tiny particles.

• The particles of matter are completely still.

• Adding heat to matter makes the particles move faster.

• The particles have spaces between them.

Which of the following statements is true?

• Gases have no forces holding particles together, so particles are far apart

• Liquids have strong forces holding them together, so particles cannot move around

• Liquids have no forces holding particles together, so particles are far apart

• Gases have weak forces holding them together, so particles can slide past each other easily

Which of the following is NOT a property of a chemical change?

• A change that results in a colour change

• A change that results in heat being given out

• A change that makes no new substances

• A change that results in a different smell

Which of the following changes is a physical change?

• Cooking bacon

• Ripping paper

• Lighting a match

• A rotting banana

Which of the following is an example of condensation?

• Heat is added to ice causing it to change states to water

• Heat is taken away from steam causing it to change states to water

• Heat is added to water causing it to change states to a steam

• Heat is take away from water causing it to change states to ice

Fill in the blanks:

Matter is something that has ___________________, and takes up _______________

• Particle, Space

• Mass, Shape

• Colour, Volume

• Mass, Space

Fill in the blanks:

The density of a substance is the amount of __________________ it takes up, relative to its _______________________________.

• Space, Mass

• Volume, Shape

• Heat, Particle

• Kinetic Energy, Shape

Fill in the blanks,

Fluidity is the ability of a substance to change its ________________________________ in order to flow

• Colour

• Shape

• Space

• Volume

Determine if the following change is a physical or chemical change:

Glass breaking

• Chemical

• Physical

Answer explanation

Breaking of glass only changes it's shape

Determine if the following change is a physical or chemical change:

Burning wood

• Chemical

• Physical

Answer explanation

Burning wood, releases heat, creates a smell and new chemicals