Matter questions

By Interwoven Maths

Matter question collection

Review Matter questions for Physics, with correct answers shown and coverage across particle models of solids, liquids and gases; density calculations; changes of state.

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Question 1

What happens to mass when ice melts in a closed container?
  1. It stays the same
  2. It decreases as the ice disappears
  3. It increases as liquid forms
  4. It changes into thermal energy

Question 2

What does Brownian motion provide evidence for?
  1. Random motion of unseen particles
  2. Regular motion of particles in circles
  3. Bulk motion caused only by convection
  4. Stationary particles vibrating in a lattice

Question 3

What process spreads perfume molecules through still air?
  1. Diffusion
  2. Convection
  3. Condensation
  4. Freezing

Question 4

Which equation defines density \(\rho\)?
  1. \(\rho = \frac{m}{V}\)
  2. \(\rho = mV\)
  3. \(\rho = \frac{V}{m}\)
  4. \(\rho = m + V\)

Question 5

A block has mass \(3\,\mathrm{kg}\) and volume \(0.001\,\mathrm{m^3}\). What is its density?
  1. \(3000\,\mathrm{kg\,m^{-3}}\)
  2. \(300\,\mathrm{kg\,m^{-3}}\)
  3. \(30\,\mathrm{kg\,m^{-3}}\)
  4. \(30000\,\mathrm{kg\,m^{-3}}\)

Question 6

Which energy store includes particle motion and positions inside a material?
  1. Internal energy
  2. Kinetic energy
  3. Gravitational potential energy
  4. Elastic potential energy

Question 7

Which state has fixed volume but takes its container's shape?
  1. Liquid
  2. Solid
  3. Gas
  4. Plasma

Question 8

As ice melts at its melting point, what happens to its temperature?
  1. It stays constant
  2. It increases
  3. It decreases
  4. It fluctuates

Question 9

A gas compresses more easily than a liquid. Its particles do what?
  1. Are farther apart
  2. Have no mass
  3. Are larger
  4. Stop moving

Question 10

Which change conserves both mass and chemical composition?
  1. Evaporation of water
  2. Burning paper
  3. Iron rusting
  4. Baking a cake

Question 11

When water condenses, what happens to the energy stored by the particles?
  1. It decreases
  2. It increases
  3. It is unchanged
  4. It becomes zero

Question 12

For most substances, how does particle spacing change when a solid melts?
  1. It increases slightly
  2. It decreases greatly
  3. It becomes as wide as in a gas
  4. It stays fixed until boiling

Question 13

Which state has particles sliding past each other while still touching?
  1. Liquid
  2. Solid
  3. Gas
  4. Plasma

Question 14

For a fixed mass, what usually happens to internal energy as temperature rises?
  1. It increases
  2. It decreases
  3. It stays constant
  4. It rises then returns to its starting value

Question 15

Which state change is the reverse of melting?
  1. Freezing
  2. Condensation
  3. Evaporation
  4. Sublimation

Question 16

What happens to the density of a fixed gas mass when it is compressed?
  1. It increases
  2. It decreases
  3. It stays the same
  4. It immediately equals the liquid's density

Question 17

Where in a liquid does boiling occur?
  1. Throughout the liquid
  2. Only at the surface
  3. Only against the container
  4. Only above the liquid

Question 18

A sample has mass \(240\,\mathrm{g}\) and density \(3\,\mathrm{g\,cm^{-3}}\). What is its volume?
  1. \(80\,\mathrm{cm^3}\)
  2. \(720\,\mathrm{cm^3}\)
  3. \(0.0125\,\mathrm{cm^3}\)
  4. \(243\,\mathrm{cm^3}\)

Question 19

What is the change from liquid to gas below boiling point?
  1. Evaporation
  2. Condensation
  3. Freezing
  4. Sublimation

Question 20

Which particles are most likely to escape during evaporation?
  1. The highest-energy surface particles
  2. The lowest-energy surface particles
  3. Particles deepest inside the liquid
  4. All particles at exactly the same rate

Question 21

What happens to particles when a gas condenses?
  1. They slow and move closer together
  2. They speed up and spread farther apart
  3. They change into different atoms
  4. They stop moving and lose all spacing

Question 22

What makes a gas easy to compress?
  1. Large gaps between particles
  2. Particles shrinking under pressure
  3. Particles losing mass under pressure
  4. Particles condensing under any pressure

Question 23

Which process changes a gas directly into a solid?
  1. Deposition
  2. Melting
  3. Boiling
  4. Condensation

Question 24

A material has mass \(500\,\mathrm{g}\) and volume \(200\,\mathrm{cm^3}\). What is its density?
  1. \(2.5\,\mathrm{g\,cm^{-3}}\)
  2. \(0.4\,\mathrm{g\,cm^{-3}}\)
  3. \(100000\,\mathrm{g\,cm^{-3}}\)
  4. \(700\,\mathrm{g\,cm^{-3}}\)

Question 25

What is a molecule?
  1. Two or more atoms joined together
  2. A single uncombined atom
  3. An atom that has lost electrons
  4. A mixture of two substances

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Review Matter questions for Physics, with correct answers shown and coverage across particle models of solids, liquids and gases; density calculations; changes of state.

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