Biology EOC Review: L.18.12 Properties of Water

Fill in the blanks:

In the figure above, water is the ______________ while sodium chloride (table salt) is the _______________.

• solvent, solute

• solute, solvent

• solute, solute

• element, molecule

Tags

NGSS.MS-PS1-2

What does it mean when a molecule is said to be “polar”?

• The molecule has tendency to absorb a lot of heat, therefore it remains 'cold' easily

• The molecule has an even distribution of charges, all parts are positive

• The molecule has an even distribution of charges, all parts are negative

• The molecule has an uneven distribution of charges, some parts are positive while others are negative

Tags

NGSS.MS-PS2-3

Which of the following is not a special property of water?

• Water has the ability to moderate its temperature

• Water is polar, therefore it is very adhesive

• Water contracts when it freezes

• Water is polar, therefore it is very cohesive

Tags

NGSS.MS-ESS2-4

According to the figure, a hydrogen bond can form between a hydrogen atom of one water molecule and which atom of another water molecule?

• Carbon

• Hydrogen

• Oxygen

• Sodium

Which special property of water is responsible for the fact that water and oil do not mix?

• density

• mass

• phase

• polarity

According to the figure above, a solution with a pH of 11 is

• acidic

• alkaline

• neutral

• a buffer

Acidic solutions have a pH that is

• between 0 and 7

• above 14

• below 0

• between 7 and 14

According to the figure above, polar molecules such as water have

• no negative or positive poles.

• both negative and positive poles.

• only a negative pole.

• only a positive pole.

A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a

• nonpolar molecule.

• polar molecule.

• charged molecule.

• bipolar molecule.

The picture above depicts a water strider walking across a lake. The reason that small insects such as water striders can walk on liquid water is due to water's

• low specific heat

• high specific heat

• high surface tension

• low surface tension