The quantity of energy released or absorbed as heat during a chemical reaction

• Temperature

• Energy

• Enthalpy

• Phase change

Tags

NGSS.HS-PS1-4

A 5.0 g sample of silver is heated from 0°C to 35°C and absorbs 42 J of energy as heat. What is the specific heat of silver?

• 0.24 J/g°C

• 4.17 J/g°C

• 7350 J/g°C

• 4.184 J/g°C

Tags

NGSS.HS-PS3-4

The triple point of a substance is the temperature and pressure conditions at which

• Density is greatest

• 
  Equilibrium cannot occur

• States of a substance coexist at equilibrium

• Kinetic energy is at a minimum

What is the process of a substance changing from a solid to a vapor without passing through the liquid phase?

• Condensation

• Sublimation

• Evaporation

• Vaporization

Which phase changes require that energy be added?

• Solid to liquid, liquid to gas, solid to gas

• Solid to liquid, liquid to gas, gas to solid

• Solid to liquid, gas to liquid, solid to gas

• Solid to gas, gas to liquid, liquid to solid

Tags

NGSS.MS-PS1-4

Ethan plays a joke on his friend. He makes his hands cold by placing them on a cold coke bottle and then places his hands on the back of his friend’s neck. Energy is primarily flowing

• From the coke bottle to his hands

• From his friend’s neck to his hands

• From his hands to his friend’s neck

• From his hands to the air

Tags

NGSS.HS-PS3-4

Deposition is the process in which

• A liquid changes to a gas

• A solid changes to a gas

• A liquid changes to a solid

• A gas changes to a solid

Tags

NGSS.MS-PS1-4

At what points can water exist in more than one phase?

• Water exists in more than one phase on the slopes and plateaus

• Water exists in more than one phase on the slopes (1, 3 and 5)

• Water can never exist in more than one phase

• Water exists in more than one phase at the plateaus (2 and 4)

Which number(s) represent phase changes?

• 1, 3, 5

• 2, 4

• Only 2

• Only 4

Vaporization occurs when a liquid changes into a gas. At what point does vaporization occur?

• 4

• 3

• 5

• 2

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4