5.1 (A) Physical Characteristics of Water

Fill-in-the-blank flashcards covering water’s basic role, physical properties, surface tension, capillary action, impurities effects, and phase-change heat behavior.

Water covers more than __% of the Earth’s surface.

70

Water is a need of all life on Earth.

basic

Water is colorless, __, and tasteless.

odourless

Water is colorless, odourless, and __.

tasteless

The boiling point of water is __ °C.

100

The freezing point of water is __ °C.

0

The melting point of water is __ °C.

0

Density of water is __ g/cm^3.

1

Water is a poor heat __.

conductor

Water is a poor electrical __.

conductor

Water has high __.

surface tension

The surface tension is the result of cohesive forces between water molecules at the .

surface

Capillary action is driven by cohesive forces within water and adhesive forces between water molecules and the __.

cell walls of xylem

Adhesive force is the attractive force between __ molecules.

different

Cohesive force is the attractive force between __ molecules.

the same

The presence of impurities will __ the boiling point of water.

increase

The presence of impurities will __ the melting point / freezing point of water.

decrease

The presence of impurities will __ the density of water.

increase

Melting is the phase change from solid to __.

liquid

Freezing is the phase change from liquid to __.

solid

Sublimation is the phase change from solid to __.

gas

Evaporation/boiling is the phase change from liquid to __.

gas

Condensation is the phase change from gas to __.

liquid

Heat is __ in melting, sublimation, and evaporation/boiling.

absorbed

Heat is __ in freezing and condensation.

released