Water Unit

Question 1

H2O (s) –> H2O (l) shows the process of _______________________.

Answer 1

melting

Question 2

H2O (l) –> H2O (g) shows the process of _______________________.

Answer 2

evaporation or boiling or vaporization

Question 3

In plants, when water is lost through the leaves to the atmosphere it is called ___________________________________.

Answer 3

transpiration

Question 4

In humans when water is lost through your pores it is called ________________________________.

Answer 4

perspiration

Question 5

A ___________________________ has an invisible boundary that is bordered by mountaintops and ridges and funnels water into reservoirs.

Answer 5

watershed

Question 6

_______________________________ is the process of water moving through the ground.

Answer 6

percolation

Question 7

The freezing point of water is ___________ and the boiling point is ___________.

Answer 7

FP is 0 degrees C BP is 100 degrees C

Question 8

Condensation occurs when water in the __________ is _____________ and forms on the surface of something like a water bottle or fish tank.

Answer 8

air is cooled

Question 9

Acids have a pH range of ____ to ____;

Answer 9

acids: 1 to 6

Question 10

bases have a pH range of ____ to ____

Answer 10

bases: 8 to 14

Question 11

neutral substances have a pH of ____

Answer 11

neutral: 7

Question 12

In the formula C12H22O12 the simplest ratio of atoms is ___C: ___H: ___ O

Answer 12

6C: 11 H: 6 O

Question 13

The change of H2O (g) –> H2O (l) is called _________

Answer 13

condensation

Question 14

H2O (l) –> H2O (s) is called ______

Answer 14

freezing

Question 15

Acids have more ____ ions than _______ ions.

Answer 15

more H+ ions than OH- ions

more Hydrogens ions than Hydroxide ions

Question 16

Bases have more ______ ions that _______ions.

Answer 16

more OH- ions than H+ ions

more Hydroxide ions than Hydrogen ions

Question 17

shape of the land is referred to as_______

Answer 17

topography

Question 18

a zone of saturation under the ground is called an____

Answer 18

aquifer

Question 19

the level of water in an aquifer is called the ___

Answer 19

water table

Question 20

water that infiltrates the ground is called___

Answer 20

groundwater

Question 21

how fast water moves through the soil is called a ____

Answer 21

rate of percolation

Question 22

The word basin can refer to collection points such as ___, ____, _____ and ______.

Answer 22

ponds, lakes, reservoirs and rivers.

Question 23

ice is ________ dense than liquid water and therefore will ________.

Answer 23

less; float

Question 24

the substance that does the dissolving in a solution is called the ____.

Answer 24

solvent

Question 25

the substance that gets dissolved in a solution is called the ____.

Answer 25

solute

Question 26

The human body is _______% water

Answer 26

70%

Question 27

Water covers almost \_\_\_\_ % of the earth, and most of it
is \_\_\_\_\_\_water (97%)

Answer 27

80%; salt

Question 28

Fresh water is actually less than ____ %. Glaciers hold about ______% of water.

Answer 28

Fresh water : 1%

Glaciers 2%

Question 29

water is neutral because it has equal amounts of _____ and _________ ions present in it.

Answer 29

Hydrogen and Hydroxide

Question 30

Acids turn litmus paper this color

Answer 30

red

Question 31

Bases turn litmus paper this color

Answer 31

blue

Question 32

Acids are ______ in phenolphthalein

Answer 32

clear

Question 33

Bases are ______ in phenolphthalein

Answer 33

bright pink (fuschia) magenta

Question 34

pH paper is shades of ______ in acids

Answer 34

red

Question 35

pH paper is shades of ______ in acids

Answer 35

blue

Question 36

pH paper is ______ in neutral solutions.

Answer 36

green