Changing State

Breaking bonds is an ...... process where energy is absorbed to separate particles.

When a substance changes state from being more ordered to being more disordered, the bonds between particles are ....

Name a change of state process that is endothermic

When a substance becomes more ordered, bonds are formed so energy is ....

Name a state change that is an exothermic process

In a heating or cooling curve, flat sections are seen when the particles are changing state because the energy is ..... to change the state and the overall ....... energy of the particles doesn't change during this time.

When a substance melts, the kinetic energy of the surroundings _____________ and the kinetic energy of the system ______________.

• decreases, increases

• stays the same

• increases, decreases

• both decrease

• both increase

If this substance had kinetic energy ADDED, it would be in what phase?

• solid
• liquid
• gas
• plasma

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the average kinetic energy of a substance called?

• volume
• temperature
• pressure
• movement

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Is the substance gaining or losing energy?

• Gaining

• Losing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4