Physical Science Revision Quiz

The Tyndall effect is used to identify colloids because:

• Light scatters through them

• They reflect all light

• They absorb light

• They dissolve in water

Viscosity is the property that describes how easily a fluid:

• Flows

• Evaporates

• Conducts electricity

• Freezes

When gas volume decreases, gas particles:

• Stop moving

• Lose energy

• Collide more frequently

• Become heavier

According to Bernoulli's principle, as the velocity of a fluid increases, its pressure:

• Increases

• Stays the same

• Decreases

• Doubles

Colloids show the Tyndall effect because they:

• Absorb light completely

• scatter light

• Reflect light

• Settle out

Hydraulic lifts operate based on:

• Gravity differences

• Friction

• Pressure transmission

• Heat expansion

According to Charles's Law, if pressure is constant, gas volume:

• Increases with temperature

• Remains constant

• Decreases with temperature

• Increases with pressure

A homogeneous mixture:

• Shows different components

• Has visible layers

• Remains uniformly mixed

• Can be separated easily

Increasing the pressure on a gas at constant temperature causes its volume to:

• Stay the same

• Triple

• Increase

• Decrease

Compounds differ from mixtures because they:

• Can be separated easily

• Have a fixed ratio of elements

• Are physical blends

• Are always gases