Solids and Liquids

Which equation should be used to calculate the heat needed to melt a sample of a substance?

• q = m • S_H • ∆T
• q = m • H_f
• q = m • H_v
• PV = nRT

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

• solid
• liquid
• gas
• supercritical fluid

Tags

NGSS.HS-PS3-4

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

What is the normal boiling point of CO₂?

• -78.5 °C
• -56.7 °C
• 31 °C
• It doesn't have a normal boiling point.

Tags

NGSS.HS-PS3-4

What state of matter is X?

• solid 
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What state of matter is Y?

• solid 
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What state of matter is Z?

• solid 
• liquid
• gas
• supercritical fluid

Tags

NGSS.MS-PS1-4

What change occurs from F to E?

• sublimation
• deposition
• melting
• condensation

Tags

NGSS.MS-PS1-4

What change occurs from E to C?

• sublimation
• freezing
• melting
• boiling

Tags

NGSS.MS-PS1-4

What change occurs from C to D?

• condensation
• vaporization
• melting
• sublimation

Tags

NGSS.MS-PS1-4