Physical Science 9 Semester 2 Exam Review

Match the following

• Temperature at which a solid becomes a liquid

• Melting Point

• Temperature at which a liquid becomes a gas

• Boiling Point

• A small piece of matter

• Particle

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

An unknown sample's heating curve is given. Label the following:

b

c

a

d

e

Phase Change (L -> g)

Gas

Liquid

Solid

Phase Change (S -> L)

Tags

NGSS.MS-PS1-4

Solid Nitrogen is melted. The temperature of the sample increases quickly at first, then slows down, then quickly again. Explain why this is.

Answer explanation

In the beginning, the temperature of the solid increases. When it reaches the melting point, the solid undergoes a phase change. During the phase change the kinetic energy is used to break the bonds, rather than raising the temperature. Once the bonds are broken, the temperature increases again.

Tags

NGSS.MS-PS1-4

The table shows the normal boiling points of 5 compounds. Which compound has the strongest intermolecular forces?

• Water

• Butane

• Propane

• Pentane

• Methane

Tags

NGSS.MS-PS1-4

Water has the strongest intermolecular forces because it has the ​ (a)   boiling point. The higher the boiling point the ​ (b)   energy needed to break the bonds.

• highest
• more
• lowest
• less

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Match the following

• Energy of motion

• Microscopic

• Total kinetic energy

• Temperature

• Cannot be seen with the naked eye

• Thermal Energy

• Can be seen with the naked eye

• Macroscopic

• Average kinetic energy

• Kinetic Energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A gas is heated. The temperature of the gas ​ (a)   , the thermal energy ​ (b)   and the kinetic energy ​ (c)  

• increases
• decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The particles of the gas will move ​ (a)   . This means the kinetic energy ​​ (b)  

• faster
• increases
• slower
• decreases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which one is the warmer sample?

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The warmer sample will have a ​ (a)   average kinetic energy. This means a ​ (b)   overall temperature. The particles are ​ (c)   evenly distributed.

• higher
• more
• lower
• less

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4