Unit 2 (Characteristics of Matter) Midterm Review

What phase change(s) may occur at pressures below 4.58 mmHg?

• sublimation/deposition
• melting/freezing
• all phase changes are possible at these pressures
• vaporization/condensation

Tags

NGSS.MS-PS1-4

Water exists as a _____________ at 700 mmHg and 50 °C.

• solid
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Water exists as a _____________ at 3 mmHg and 50 °C.

• solid
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

The pressure is increased on a sample of water at 0 °C from 0 mmHg to 800 mmHg.  In order, what changes occur?

• deposition, melting
• sublimation, melting
• condensation, freezing
• deposition, freezing

Tags

NGSS.MS-PS1-2

Length

• Intensive Property

• Extensive Property

Density

• Intensive Property

• Extensive Property

Melting point

• Intensive Property

• Extensive Property

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Color

• Intensive Property

• Extensive Property

Heat changes H₂O to steam

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NaCl (salt) dissolves in water

• Physical Change

• Chemical Change

Tags

NGSS.MS-PS1-2