The Unique Properties of Water

Multiple Choice

What elements are chemically bonded to make up the water molecule?

• 1 Hydrogen and 2 Oxygen

• 2 Hydrogen and 1 Oxygen

• None, water is an element

Multiple Choice

Water molecules are _______, because the oxygen and hydrogen atoms have weak, opposite charges.

• polar

• nonpolar

Multiple Choice

The negative charge of one molecule is attracted to the positive charge of other molecules.

This attraction of one water molecule to another is known as ___________.

• hydrogen bonding

• chemical bonding

• aquatic bonding

Multiple Choice

______________ reflects the average kinetic energy of the particles.

The faster the particles move, the higher this will be.

• Heat

• Temperature

Multiple Choice

_______ is the total kinetic energy of all the particles in a substance or object.

• Temperature

• Heat

Multiple Choice

Comparing a cup of hot coffee to the Atlantic Ocean, the cup of coffee has a higher temperature, but the ocean has ________________.

• more heat because it is so large

• less heat because it is so large

• fewer molecules so it has less heat

Multiple Choice

Water is the only substance that ___________________.

• naturally occurs as a liquid on Earth.

• can hold heat

• naturally occurs in all three states on Earth.

Multiple Choice

Water is extremely unusual because it is _________ as a solid than as a liquid.

• less dense

• more dense

• softer

Multiple Choice

A floating layer of ice insulates the water below it so that it doesn’t freeze. Why is this important for aquatic life?

• It's not.

• Because the ice traps food for the organisms allowing them to feed off the ice.

• Because organisms can live in the liquid water below the ice.

Multiple Choice

Water has a high _________, which is the amount of energy required to raise a mass of substance one degree Celsius.

• specific heat

• specific energy

Multiple Choice

Water has one of the highest ________ of any naturally occurring substance.  IT CAN HOLD A LOT OF HEAT!

• energy capacities

• heat capacities

• specific capacitites

Multiple Choice

•Because water contains a large number of hydrogen bonds, water has more __________ than other liquids.

• cohesion

• adhesion

Multiple Choice

_________ is the measure of the elastic tendency of liquids. This is high for water allowing for some insects to walk on top of water.

• surface tension

• viscosity

• cohesion

Multiple Choice

Water’s ability to pour, or its resistance to flow, is a measure of its _________.

• cohesion

• viscosity

• surface tension

Multiple Choice

Water is known as a universal solvent because:

• it can dissolve a little bit of almost everything

• it can dissolve everything

• it can dissolve salts and other ionic compounds