Matter, Thermal Energy and Diffusion

What state of matter has a definite volume but no definite shape?

• Solid

• Liquid

• Gas

• Plasma

What is the most common state of matter in the universe?

• Solid

• Liquid

• Gas

• Plasma

At what temperature is the pressure of the vapor in a liquid equal to the external pressure on that liquid?

• Absolute zero

• Boiling point

• Melting point

• Heat of fusion

Tags

NGSS.MS-PS1-4

What is the amount of energy needed to change a solid to a liquid at its melting point?

• Heat of fusion

• Temperature

• Heat of vapourization

• Absolute zero

Tags

NGSS.MS-PS1-4

What process explains how a mercury thermometer works?

• Vaporization

• Sublimation

• Thermal expansion

• Change of phase

According to kinetic theory:

• Particles slow down as temperature increases

• Particles are still in a solid

• All particles are always moving

• Particles lose significant amounts of energy from their collisions

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter has no definite shape or volume?

• Solid

• Liquid

• Gas

In which state of matter are electrons stripped from atoms, making it highly electrically conductive?

• Solid

• Liquid

• Gas

• Plasma

Temperature represents:

• The average kinetic energy of particles in a substance

• The thermal energy of a substance

• Kinetic energy x potential energy

• Kinetic energy + potential energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Heat of vaporization is:

• The amount of energy required to turn a liquid into a gas at it's boiling point

• The temperature at which a liquid boils

• The amount of energy required to turn a solid into a liquid at it's melting point

• The temperature at which a solid melts

Tags

NGSS.MS-PS1-4