Session Objectives: Types and Properties of Liquids

Which of the following is NOT listed as a type of liquid whose applications and basic properties should be identified in the session?

• Water

• Refrigerants

• Anti-freeze/glycol mixes

• Acids

Which of the following best explains why water tastes different in various parts of the country?

• The temperature of the water

• The minerals dissolved in the water

• The color of the water

• The pressure of the water supply

Which of the following best describes the composition of a water molecule?

• One hydrogen atom and two oxygen atoms

• Two hydrogen atoms and one oxygen atom

• Two oxygen atoms and one nitrogen atom

• One carbon atom and two oxygen atoms

What is the primary source of energy that drives the rainwater cycle?

• Heat from the sun

• Wind energy

• Geothermal heat

• Tidal forces

By what percentage does water expand when it is heated?

• 4%

• 10%

• 20%

• 1%

What is the boiling point of water at sea level?

• 100ºC

• 120ºC

• 69ºC

• 0ºC

At the top of Mount Everest, what is the boiling point of water?

• 69ºC

• 100ºC

• 120ºC

• 0ºC

What does the image most likely represent in the context of the learning material?

• The aftermath of a water heater explosion

• A new water heater installation

• A water heater being cleaned

• A water heater with a minor leak

What is the pH value of neutral water?

• 7

• Below 7

• Above 7

• 5

Why is permanently hard water difficult to soften by boiling?

• It contains magnesium and calcium chlorides and sulphates in the solution.

• It contains calcium carbonate.

• It is acidic in nature.

• It has a pH value below 7.