Heat and Changes in Matter

Which of the following changes made to a liquid would result in an increase in the distance between the molecules?

• Transferring the substance to a smaller container

• Adding heat energy

• Changing the phase from a liquid to a soild

• Decreasing the overall kinetic energy of the liquid

Tags

NGSS.MS-PS1-4

When illustrating the difference between a solid and a liquid, the liquid illustration should

• show increased movement of the atoms

• be much larger

• be very wide spaces between the atom

• The shape of each atom must reflect the shape of the container

Tags

NGSS.MS-PS1-4

When thermal energy is added to a substance, which of the following changes can you predict will happen?

• Spacing between particles will decrease

• Vibration of the particles will increase

• Temperature of the substance will decrease

• The pressure of the air around the substance will increase

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statements best describes the relationship between temperature and kinetic energy?

• As kinetic energy decreases, temperature is not affected

• As kinetic energy increases, temperature decreases

• As kinetic energy decreases, temperature increases

• As kinetic energy increases, temperature increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The total thermal energy of a system depends on its temperature and what other factors?

• The temperature of the system's environment and its location in that environment

• The number of atoms in the system and their molecular weights

• The boiling points and freezing points of the elements that make up the substances in the system

• The number of atoms in the system and conductivity of the material

Tags

NGSS.MS-PS1-4

When a large amount of thermal energy is added to water in the liquid state what happens to the molecules?

• The more thermal energy added, the greater the attraction between molecules.

• The molecules gain kinetic energy, move farther apart, and become a gas.

• The water molecules become closer together, and their temperature increases.

• Each water molecule eventually stops moving.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In science, the term "heat" is used to describe which of the following?

• The motion of atoms or molecules within a substance

• The transfer of thermal energy from one object to another

• The average temperature of a system over time

• The average kinetic energy of the system as a whole

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

When thermal energy is removed what happens to the temperature and the kinetic energy?

• Temperature decreases, average kinetic energy increases

• Temperature decreases, average kinetic energy decreases

• Temperature increases, average kinetic energy increases

• Temperature increases, average kinetic energy decreases

Tags

NGSS.MS-PS1-4

When a substance is changing from a solid to a liquid the

• particles become more tightly packed

• pressure of the substance increases

• kinetic energy of particles increases

• particles become slow

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4