13.4 Change of State

The change of a substance from a solid to a vapor without passing through the liquid state is called ..................................

• sublimation.

• condensation.

• vaorization

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Sublimation occurs in solids with vapor pressures that ................................. room temperature.

• below atmospheric pressure at or near

• exceed atmospheric pressure at or near

• equal atmospheric pressure at or near

Sublimation has many useful applications.(Choose Two)

• Dry ice is often used as a coolant for goods.

• useful for separating substances.

• Useful for burning coal

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A phase diagram gives the conditions of .................at which a substance exists as solid, liquid, or gas (vapor).

(Choose two)

• temperature

• mass

• pressure

The relationships among the solid, liquid, and vapor states (or phases) of a substance in a sealed container can be represented in a single graph called a phase diagram

• True

• False

The point on the diagram at which all three lines meet is called the triple point.

• True

• False

The triple point describes the only set of conditions at which only solid and liquids phases can exist in equilibrium with one another.

• True

• False

For water, the triple point is a

• temperature of 0.016°C and a pressure of 0.61 kPa.

• temperature of 16°C and a pressure of 0.61 kPa

• temperature of 0.016°C and a pressure of 0.61 Pa

An increase in pressure lowers the boiling point and raises the melting point.

• True

• False

An increase in pressure will raise the boiling point and ................... the melting point.

• lower

• increase

• won't affect