Unit 2: Water Properties Flashcards Preview

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Flashcards in Unit 2: Water Properties Deck (21)
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1
Q

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

A

Water

2
Q

Where is water mainly found?

A

Inside cells

3
Q

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

A

polar

4
Q

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

A

negative

5
Q

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).

A

positive

6
Q

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

A

hydrogen

7
Q

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

A

electricity

8
Q

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

A

4

9
Q

refers to water molecules binding to other water molecules.

A

cohesion

10
Q

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

A

cohesion, adhesion, and surface tension

11
Q

This is important in how water moves up a plant.

A

cohesion

12
Q

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

A

adhesion

13
Q

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

A

surface tension

14
Q

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

A

temperature

15
Q

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

A

water

16
Q

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

A

Water

17
Q

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

A

energy

18
Q

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

A

heat

19
Q

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.)

A

temperature

20
Q

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.

A

evaporative cooling

21
Q

Water ________ when it freezes

A

expands