In the States section, observe how temperature and particle motion are related in different states of matter. What happens to the particles in a solid as the temperature increases?

• A) The particles move more slowly and stay in place.

• B) The particles move more quickly and stay in fixed positions.

• C) The particles move more quickly and can break free from their fixed positions.

• D) The particles do not move at all.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the States section, observe how the temperature affects the particle motion in gases and liquids. Which state of matter has particles that are spaced far apart and move rapidly?

• A) Solid

• B) Liquid

• C) Gas

• D) Plasma

Tags

NGSS.MS-PS1-4

In the States section, experiment with different temperatures and observe the changes in the states of matter. What happens when a gas is cooled?

• A) The particles move faster.

• B) The gas expands.

• C) The gas turns into a liquid.

• D) The gas freezes into a solid.

Tags

NGSS.MS-PS1-4

In the States section, compare how the particles in solids, liquids, and gases behave at different temperatures. What happens to the particles of a liquid as it is heated?

• A) The particles slow down and move closer together.

• B) The particles speed up and move farther apart.

• C) The particles stay the same and remain in place.

• D) The particles freeze and turn into a solid.

Tags

NGSS.MS-PS1-4

In the States section, observe how increasing the temperature affects the volume of gases. What happens to the volume of a gas if the temperature increases and the pressure is kept constant?

• A) The volume decreases.

• B) The volume remains the same.

• C) The volume increases.

• D) The gas turns into a liquid.

Tags

NGSS.MS-PS1-4

In the States section, observe how particles in different states behave at various temperatures. Which state of matter is characterized by particles that are close together but able to move around each other?

• A) Solid

• B) Liquid

• C) Gas

• D) Plasma

Tags

NGSS.MS-PS1-4

In the Phase changes section, observe how matter changes between solid, liquid, and gas states. What occurs during the process of freezing?

• A) A liquid turns into a gas.

• B) A gas turns into a liquid.

• C) A liquid turns into a solid.

• D) A solid turns into a liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the Phase changes section, experiment with adding and removing heat to observe changes in states of matter. What happens when heat is added to a solid at its melting point?

• A) The solid turns into a gas.

• B) The solid turns into a liquid.

• C) The solid stays frozen.

• D) The solid evaporates into vapor.

Tags

NGSS.MS-PS1-4

In the Phase changes section, explore the process of condensation by cooling a gas. What happens when a gas cools and turns into a liquid?

• A) The gas turns into a solid.

• B) The gas condenses.

• C) The gas evaporates.

• D) The gas remains unchanged.

Tags

NGSS.MS-PS1-4

In the Phase changes section, observe how pressure affects the phase of a substance. What happens to a gas if it is cooled while pressure is increased?

• A) The gas becomes a liquid.

• B) The gas expands.

• C) The gas turns into a solid.

• D) The gas turns into plasma.

Tags

NGSS.MS-PS1-4