Properties of Water

What is the chemical formula of water?

• HO

• H₂O

• HO₂

• H₂O₂

Tags

NGSS.MS-PS1-1

Which of the following describes the type of molecule water is?

• polar

• nonpolar

• magnetic

• ionic

Tags

NGSS.MS-PS1-1

Which end of the water molecule has a slightly positive charge?

• the oxygen end

• the hydrogen end

• both ends are slightly positive

• neither end is positive

Tags

NGSS.MS-PS1-1

What phases are water found in on earth?

• liquid

• liquid and gas

• liquid and solid

• liquid, solid, and gas

Tags

NGSS.MS-ESS2-4

What is it called when water molecules stick to each other?

• adhesion

• adherence

• cohesion

• specific heat

The attraction between the negative oxygen atom of one water molecule and the positive hydrogen atom of another water molecule is called

• ionic bonding

• covalent bonding

• hydrogen bonding

• oxygen bonding

A paperclip floating on water is an example of what property of water?

• capillary action

• universal solvent

• specific heat

• surface tension

Which of the following is NOT something that involved in creating water's strong surface tension?

• adhesion

• cohesion

• polarity

• hydrogen bonding

Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?

• The insects' feet are polar, so they are stick to the polar water molecules and are held onto the water's surface

• The insects are light enough so that they do not break the cohesive hydrogen bonds holding the water molecules together

• The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet

• The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next

Tags

NGSS.MS-PS2-5

What type of force of attraction is being demonstrated by water and the grass in this picture?

• capillary action

• cohesion

• adhesion

• surface tension