Phases of MATTER

What is the boiling point of water?

• 90 degrees Celsius (194 degrees Fahrenheit)

• 100 degrees Celsius (212 degrees Fahrenheit)

• 110 degrees Celsius (230 degrees Fahrenheit)

• 80 degrees Celsius (176 degrees Fahrenheit)

What happens to a solid when heat is added?

• It remains unchanged.

• It melts and becomes a liquid.

• It turns into gas immediately.

• It becomes a solid again.

What is plasma?

• A state of matter where gas is energized until atomic particles are freed.

• A liquid state of matter that has a fixed volume but no fixed shape.

• A solid state of matter that maintains a fixed shape and volume.

• A gaseous state of matter that is completely ionized and conducts electricity.

What happens to the particles of a gas when it condenses?

• The particles gain energy and spread apart, becoming a gas.

• The particles lose energy and come closer together, becoming a liquid.

• The particles remain unchanged and stay as a gas.

• The particles increase in temperature and become a solid.

What is the freezing point of water?

• -10 degrees Celsius (14 degrees Fahrenheit)

• 0 degrees Celsius (32 degrees Fahrenheit)

• 100 degrees Celsius (212 degrees Fahrenheit)

• -5 degrees Celsius (23 degrees Fahrenheit)

What is an example of sublimation?

• Dry ice turning directly into carbon dioxide gas without becoming liquid.

• Water boiling into steam.

• Ice melting into water.

• Sugar dissolving in water.

What is the process of changing from solid to gas called?

• Evaporation

• Condensation

• Sublimation

• Melting

What is a gas?

• A state of matter that has no defined shape or volume and expands to fill its container.

• A liquid that has a fixed volume but no fixed shape.

• A solid that maintains its shape and volume regardless of the container.

• A form of matter that can only exist at extremely high temperatures.

What happens to a liquid when heat is added?

• It freezes and turns into solid.

• It evaporates and turns into gas.

• It remains unchanged.

• It becomes denser and sinks.

What happens to the particles of a gas when it cools down?

• The particles gain energy and move further apart.

• The particles lose energy and come closer together, eventually turning into a liquid.

• The particles remain unchanged and stay in the same position.

• The particles increase in speed and become a solid.