Properties of 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

Tags

NGSS.MS-PS1-1

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.}

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NGSS.MS-PS2-5

The ability of water molecules to stick to each other, creating surface tension is called:

• Cohesion

• Adhesion

• Insulation

• Ph

The fact that water can stick to other substances is called:

• Ph

• Adhesion

• Cohesion

• Insulation

True or False:

Heat is energy produced by the random vibrations of atoms or molecules.

• True

• False

Tags

NGSS.MS-PS1-1

NGSS.MS-PS3-3

Heat Capacity is a measure of the heat required to raise the temperature of 1g of a substance by 1°C.

So...

True or False:

Water has a very high heat capacity, which means it resists changing temperature when heat is added or removed.

• True

• False

Tags

NGSS.MS-PS1-4

True or False:

Water exists in the following states:

-Solid

-Liquid

-Gas

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-4

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

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

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

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-6

Ocean surfaces temperatures depend on:

• Salinity (how salty it is) only

• Latitude, Temperature, Salinity

• Rainfall and temperature

• Winds, sun, and moon

Tags

NGSS.MS-ESS2-6