Triple Point

What is point A?

• triple point

• critical point

• equilibrium point

• normal melting point

Which region represents a solid?

• A

• B

• C

Tags

NGSS.MS-PS1-4

At what temperature is the triple point?

• 0 degrees

• 0.01 degrees

• 100 degrees

• 374 degrees

Which region represents a liquid?

• A

• B

• C

Tags

NGSS.MS-PS1-4

At what temperature do all three phases coexist?

• 0 degrees C

• 0.01 degrees C

• 100 degrees C

• 374 degrees C

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

What is true regarding CO₂ for temperatures above 31 °C?

• It can never be liquified.

• It decomposes.

• It has a high pressure.

• It is a plasma.

At 10 atm, dry ice is heated from -100 °C to 30 °C.  What changes occur?

• freezing, then condensation

• melting only

• sublimation only

• melting, then boiling

Tags

NGSS.HS-PS3-4

What state of matter is X?

• solid 

• liquid

• gas

• supercritical fluid

Tags

NGSS.MS-PS1-4

What state of matter is Y?

• solid 

• liquid

• gas

• supercritical fluid

Tags

NGSS.MS-PS1-4