Canada Grade 6 Science Matter: States of matter

What are the three states of matter?

• Solid, Liquid, Plasma

• Solid, Liquid, Gas

• Liquid, Gas, Plasma

• Solid, Gas, Plasma

Answer explanation

The three primary states of matter are Solid, Liquid, and Gas. Plasma is often considered a fourth state, but it is not one of the three basic states. Therefore, the correct answer is Solid, Liquid, Gas.

What is the process called when a solid turns into a liquid?

• Freezing

• Condensation

• Melting

• Evaporation

Answer explanation

The process when a solid turns into a liquid is called melting. This occurs when a solid absorbs heat, causing its particles to gain energy and move apart, transitioning into the liquid state.

Tags

NGSS.MS-PS1-4

Which of the following is an example of a gas?

• Ice

• Water

• Steam

• Milk

Answer explanation

Steam is the gaseous form of water, produced when water boils. Ice is solid, water is liquid, and milk is a colloid, making steam the only correct example of a gas among the options.

Tags

NGSS.MS-PS1-4

What happens to the particles of a substance when it freezes?

• They move faster

• They move slower and become more organised

• They move slower and become less organised

• They move faster and become less organised

Answer explanation

When a substance freezes, its particles lose energy and move slower. This decrease in movement allows the particles to arrange themselves into a more organized structure, resulting in a solid form.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following processes involves a liquid changing into a gas?

• Freezing

• Melting

• Evaporation

• Condensation

Answer explanation

Evaporation is the process where a liquid changes into a gas, typically occurring at the surface of the liquid. Freezing and melting involve changes between solid and liquid states, while condensation is the reverse of evaporation.

Tags

NGSS.MS-PS1-4

What is the boiling point of water in degrees Celsius?

• 0°C

• 50°C

• 100°C

• 212°C

Answer explanation

The boiling point of water is 100°C at standard atmospheric pressure. This is the temperature at which water transitions from liquid to gas, making 100°C the correct answer.

Which state of matter has a definite shape and volume?

• Solid

• Liquid

• Gas

• Plasma

Answer explanation

A solid has a definite shape and volume, unlike liquids and gases which take the shape of their container. Therefore, the correct answer is solid.

What is the process called when a gas turns into a liquid?

• Melting

• Freezing

• Condensation

• Sublimation

Answer explanation

The process when a gas turns into a liquid is called condensation. This occurs when gas molecules lose energy and come together to form a liquid, contrasting with melting (solid to liquid) and freezing (liquid to solid).

Tags

NGSS.MS-PS1-4

Which of the following materials is most likely to be a solid at room temperature?

• Oxygen

• Water

• Iron

• Helium

Answer explanation

Iron is a metal and is solid at room temperature, while oxygen and helium are gases, and water is a liquid. Therefore, iron is the most likely material to be a solid at room temperature.

What is the term for the change of state from solid directly to gas?

• Evaporation

• Sublimation

• Condensation

• Deposition

Answer explanation

The term for the change of state from solid directly to gas is sublimation. This process occurs without passing through the liquid phase, unlike evaporation, which involves a liquid state.