What state of matter is X?

• solid 
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

What is point A?

• triple point
• critical point
• equilibrium point
• normal melting point

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

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

• solid
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

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 3 mmHg and 50 °C.

• solid
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement is true for carbon dioxide at -60 °C?

• All three phases are possible.
• It can exist as a solid or a gas, depending on pressure.
• It is a solid.
• With enough pressure it can be melted.

Tags

NGSS.MS-PS1-4

Which phase change increases the molecule's freedom of movement?

• Melting
• Freezing
• Condensing

Tags

NGSS.MS-PS1-4

Describe the substance between letters D and E. 

• Gas
• Liquid
• Melting
• Evaporating

Tags

NGSS.MS-PS1-4

The melting point of the sample is

• -60 ºC

• -100 ºC

• 60 ºC

• 100 ºC

Tags

NGSS.MS-PS1-4

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

• 20°C

• 50°C

• 110°C

• 170°C

Tags

NGSS.HS-PS3-4