U2-L2 Changes of State

What is the process called when matter changes from one state to another?

• Chemical reaction

• Change of state

• Combustion

• Oxidation

Tags

NGSS.MS-PS1-4

What happens to the identity of a substance during a change of state?

• It changes completely

• It becomes a new element

• It remains the same

• It disappears

Tags

NGSS.MS-PS1-4

During a change of state, what happens to the matter?

• It is created

• It is destroyed

• It is neither created nor destroyed

• It multiplies

Tags

NGSS.MS-PS1-5

What remains constant before and after a change of state?

• The color of the substance

• The number of particles

• The temperature

• The volume

Tags

NGSS.MS-PS1-4

What is thermal energy?

• The total kinetic energy of all the particles in a substance.

• The potential energy of a single particle.

• The energy stored in chemical bonds.

• The energy required to change the state of a substance.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

What happens when thermal energy is added to a substance?

• The substance's kinetic energy decreases.

• The particles move slower.

• The substance's kinetic energy increases.

• The substance changes color.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does temperature measure?

• The total energy of a substance.

• The average kinetic energy of the particles.

• The potential energy of the particles.

• The chemical energy in a substance.

Tags

NGSS.MS-PS1-4

What is the process called when a substance changes from a solid to a liquid?

• Freezing

• Melting

• Evaporation

• Condensation

Tags

NGSS.MS-PS1-4

What happens to ice particles when energy is added to them?

• They slow down

• They stop moving

• They speed up

• They freeze

Tags

NGSS.MS-PS1-4

What is the term for the temperature at which a substance begins to melt?

• Boiling point

• Freezing point

• Melting point

• Sublimation point