Characteristics of Water

Melting Point of water is

• 100 degrees Celsius

• 0 degrees Celsius

• 0 degrees Fahrenheit

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On a hot, summer day, water droplets often form on the outside of a cold glass of water. The water droplets form when water vapor in the air

• loses heat on the cold glass

• reacts with the chemicals in the air

• gains energy from sunlight

• is moved about quickly by wind

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Paint dries up after a while. This is an example of__________.

• Condensation

• Evaporation

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When water freezes in the ocean, the ice floats to the surface. What property explains this phenomenon?

• water expands when it freezes, making ice less dense than water

• water compacts when it freezes, making ice more dense than water

• hydrogen bonds in water push the ice to the surface

• ice is afraid of water, and avoids it

If this is a floating ice sheet, which property of water is this polar bear relying on? 

• Surface Tension

• Cohesion

• Adhesion

• Density

The following are physical characteristics of pure water except...

• low surface tension

• _colourless

• tasteless

• liquid at room temperature

We can determine the composition of elements in a water molecule through electrolysis.

From the above diagram, what gas will be collected at Y?

• Nitogen

• Carbon dioxide

• Hydrogen

• Oxygen

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The diagram shows daddy longlegs on the surface of water.

The daddy longlegs able to stay afloat on water is a result of ..

• adhesive force

• boiling point

• cohesive force

• density

Water can be brought from root to leaf due to ......

• surface tension

• capillary action

• air pressure

• density

Choose the physical characteristics of water. (You can choose more than one answer.)

• Colourless

• Odourless

• Tasteless

• Acidic