Chapter 6 Grade 10 SABIS Quiz 3 Condensed phase

What happens when a liquid is heated at its boiling point?

• Its temperature rises
• The bonds holding the molecules together break
• Both temperature rises and bonds break
• None of the above

What is the process of vaporization?

• Endothermic
• Exothermic
• Neither
• Both

What happens to the temperature as long as the liquid remains during vaporization?

• It increases
• It decreases
• It stays constant
• It fluctuates

How much heat can you lose as 4.5 gram of water evaporates from your skin?

• 10.5 kJ
• 11 kJ
• 12 kJ
• 13 kJ

What is the minimum mass of water that should evaporate from your skin to lose 8.4 kJ?

• 2.6 g
• 3.6 g
• 4.6 g
• 5.6 g

How does the PE and the KE of particles in a liquid change from point A to B? First step in heating curve

• PE increases, KE decreases

• PE remains the same , KE increases

• Both PE and KE increase

• Both PE and KE decrease

How does the PE and the KE of particles in a liquid change from point B to C?second step of heating curve

• PE increases, KE remains the same

• PE decreases, KE remains the same

• Both PE and KE increase

• Both PE and KE decrease

How does the PE and the KE of particles in a liquid change from point C to D? Third step of heating curve

• PE remains the same, KE increases

• PE remains the same, KE decreases

• Both PE and KE increase

• Both PE and KE decrease

How can you obtain pure water from sea water by freezing?

• By cooling the sea water, the crystals that form will be pure water
• By heating the sea water, the steam that forms will be pure water
• By filtering the sea water, the filtrate will be pure water
• None of the above

How can you verify that a given liquid is pure water?

• By measuring its boiling or freezing point
• By measuring its density
• By measuring its color
• By measuring its taste