Solid - Liquid and Gas Quiz

When water evaporates from your skin during sweating, why does it create a cooling effect?

• The water molecules take energy with them when they leave
• The water molecules add energy to your skin
• The air temperature decreases
• Sweat creates a barrier that blocks heat

Which factor would NOT increase the rate of evaporation?

• Decreasing the surface area
• Increasing the temperature
• Adding air movement
• Adding heat energy

Using Boyle's Law (p₁V₁ = p₂V₂), if pressure doubles, what happens to volume?

• Volume doubles
• Volume stays the same
• Volume halves
• Volume increases by 4 times

Why can evaporation occur at any temperature?

• All liquids contain some molecules with enough energy to escape
• The air pulls molecules out of the liquid
• Gravity pushes molecules out
• The liquid is always at boiling point

How does increasing surface area affect evaporation rate?

• Increases evaporation rate by exposing more molecules to the air
• Decreases evaporation rate
• Has no effect on evaporation rate
• Only affects evaporation at high temperatures

Which temperature conversion is correct?

• 0K = -273°C
• 0K = 0°C
• 0K = 100°C
• 0K = 273°C

In the equation ΔQ = mcΔT, what does 'c' represent?

• Specific heat capacity
• Change in temperature
• Mass
• Heat energy

Which scenario would result in the fastest evaporation?

• Hot day with wind
• Hot day without wind
• Cold day with wind
• Cold day without wind

What causes molecules to escape during evaporation?

• Having enough kinetic energy
• Having low kinetic energy
• Being pushed by other molecules
• Being pulled by air molecules

If the temperature of a liquid doubles (in Kelvin), what happens to the average kinetic energy of its molecules?

• Doubles
• Halves
• Stays the same
• Quadruples