Unit 2: Water Properties

Question 1

makes up 70 –95% of the organisms body for all life forms on earth.

Answer 1

Water

Question 2

Where is water mainly found?

Answer 2

Inside cells

Question 3

Water is a _______ Molecule (has a positive and a negative end)

Answer 3

polar

Question 4

Oxygen has a slightly ________ charge because it is more electronegative (it has a stronger hold on the electrons because it has eight positive protons).

Answer 4

negative

Question 5

Hydrogen has a slightly _______ charge because it is less electronegative (it has a weaker hold on the electrons because it only has one positive proton).

Answer 5

positive

Question 6

Water’s polarity allows for it to make ________ bonds easily.

Answer 6

hydrogen

Question 7

Polarity makes it possible to conduct __________ very well. (Remember, _________ is flowing electrons.)

Answer 7

electricity

Question 8

The polarity allows for a single water molecule to bind to ___ other water molecules at a time.

Answer 8

4

Question 9

refers to water molecules binding to other water molecules.

Answer 9

cohesion

Question 10

These properties is made possible because of Hydrogen bonds. (3)

Answer 10

cohesion, adhesion, and surface tension

Question 11

This is important in how water moves up a plant.

Answer 11

cohesion

Question 12

refers to water molecules binding to something other than water molecules.

Answer 12

adhesion

Question 13

the linking together of water molecules on the surface of a body of water.

Answer 13

surface tension

Question 14

Water helps with _________ regulation in organisms and on the earth.

Answer 14

temperature

Question 15

the only substance on earth to be found in all 3 states naturally. (solid, liquid, and gas)

Answer 15

water

Question 16

can act as a huge heat “piggy” bank. (made possible by hydrogen bonds)

Answer 16

Water

Question 17

It takes tremendous amounts of ______ to break all four hydrogen bonds at once and turn liquid water to a gas.

Answer 17

energy

Question 18

This measurement is the total amount of kinetic E in a substance.

Answer 18

heat

Question 19

This measurement is the intensity of all the heat in a substance as the molecules move. (The faster they move… the hot it gets and the slower they move… the colder it gets.)

Answer 19

temperature

Question 20

Putting heat E into water, causing the water to evaporate and carry the heat E away from the body thus providing a cooling of the organism to occur as the E leaves.

Answer 20

evaporative cooling

Question 21

Water ________ when it freezes

Answer 21

expands