Properties of Ocean Water

-A water molecule is composed of 2 H atoms and 1 O atom. What is the chemical equation for water?

• HO

• H2O

• H3O

• H2O2

Water is a polar molecule, which means it has a positive and a negative side. Hydrogen bonds form when:

• _{The positive end of one water molecule bonds to the positive end of another water molecule.}

• _{The negative end of one water molecule bonds to the negative end of another water molecule.}

• _{The positive end of one water molecule bonds to the negative end of another water molecule.}

True or False:

Water exists in the following states:

-Solid

-Liquid

-Gas

• True

• False

Why does ice float on water?



• When it freezes it becomes less dense

• When it freezes it becomes more dense

• When it freezes its density stays the same

True or False:

Ocean surface water greatly affects global temperatures. Even in places that share the same latitude can have very different temperatures due to being near an ocean.

• True

• False

Ocean surfaces temperatures depend on:

• Salinity (how salty it is) only

• Latitude, Temperature, Salinity

• Rainfall and temperature

• Winds, sun, and moon

What two elements make up salt water?

• Sodium Chloride

• Sodium Salt

• Salt Chloride

• Potassium Chloride

The measurement of salinity is

• the amount of salt in the water.

• the amount of chloride in the water.

• the amount of potassium in the water.

• the amount of nutrients in the water.

 The density of ocean water is influenced by what two factors?

•  Salinity and temperature
• Water color and chlorophyll
•  Dissolved gases and dissolved solids
•  Dissolved carbon and trace elements

The gravitational pull between Earth and the moon is called a _____________

• current

• wave

• tide