1st Semeste Review

Question 1

What consumed in the preparation,production,or delivery of goods and services is an ________ water use

Answer 1

Indirect

Question 2

Water use controlled by actual end user is an _____ water use

Answer 2

Direct

Question 3

No fixed volume or shape

Answer 3

Gas

Question 4

Definite volume but no fixed shape

Answer 4

Liquid

Question 5

Fixed volume and fixed shape

Answer 5

Solid

Question 6

What we found on top of ground is _____ water?

Answer 6

Surface

Question 7

What collected underground in porous rock is _____ water ?

Answer 7

Ground

Question 8

Separating liquid substances based on different in their boiling points?

Answer 8

Distalation

Question 9

Separating solid particles from liquid by passing the mixture through a material that retains the solid particles?

Answer 9

Filtration

Question 10

Water changing from a liquid to a gas state,leaving any impurities dissolved in it behind?

Answer 10

Evaporation

Question 11

Properties that can be observed and measured without changing the chemical makeup of the substance are ______ properties

Answer 11

Physical

Question 12

List 3 physical properties?

Answer 12

Density,color,crushing,melting

Question 13

NaCL is a (compound,mixtures,element)

Answer 13

Compound

Question 14

Na (compound,mixtures,element)

Answer 14

Element

Question 15

Chocolate milk (compound,mixtures,element)

Answer 15

Mixture

Question 16

Salt & pepper (compound,mixtures,element)

Answer 16

Mixture

Question 17

Au (compound,mixtures,element)

Answer 17

Element

Question 18

CuCL2 (compound,mixtures,element)

Answer 18

Compound

Question 19

Contains relatively large particles that settle out ____

Answer 19

Suspension

Question 20

Contains particles large enough to reflect light but to small to settle out ______

Answer 20

Colloid

Question 21

Contains particles uniformly spread though-too small to reflect lighter settle out

Answer 21

Solution

Question 22

Anything that occupies space and has mass is _____

Answer 22

Matter

Question 23

The smallest particle possessing the properties of an element

Answer 23

Atom

Question 24

Is matter that is made up of only one kind of atom

Answer 24

Element

Question 25

Is substance composed of atoms of two or more elements linked together chemically in fixed proportions

Answer 25

Molecule

Question 26

In a chemical equation the starting substances are called?

Answer 26

Reactants

Question 27

And the substances that form are called?

Answer 27

Products

Question 28

Like charges ?

Answer 28

Repeal

Question 29

Unlike charges

Answer 29

Attract

Question 30

Are positively charged

Answer 30

Protons

Question 31

Negatively charged

Answer 31

Electrons

Question 32

Have no charge

Answer 32

Neutrons

Question 33

Located in the nucleus

Answer 33

Protons neutrons

Question 34

Located in the outer shell

Answer 34

Electrons

Question 35

Heterogenous mixtures _____ have uniform composition

Answer 35

Do not

Question 36

Homogenous mixtures ____ have uniform composition

Answer 36

Do

Question 37

Substance that will not noticeable dissolve in water

Answer 37

Insoluble

Question 38

Contains more solute that could usually be dissolved at that temperature

Answer 38

Supersaturated

Question 39

Contains less dissolved solute than the amount that the solvent can normally hold at the temperature

Answer 39

Unsaturated

Question 40

Contains the maximum amount of the solute that will normally dissolved at that temperature

Answer 40

Saturated

Question 41

In a solution the ____ is the dissolving agent and the ___ is the substance that gets dissolved

Answer 41

Solvent (water) | Solute (sugar)

Question 42

As temperature increases gas solubility does what?

Answer 42

Decrease

Question 43

As temperature increases solid solubility does what

Answer 43

Increase

Question 44

Water molecules are what?

Answer 44

Polar

Question 45

Polar

Answer 45

Means that they have an uneven distrubution of electrical charge

Question 46

One end of the POLAR molecule has ___ chat he and the other side has a ___ charge

Answer 46

Positive | Negative

Question 47

Name 2 metal ions that are of concern for health

Answer 47

Lead | Mercury

Question 48

What is lead used in

Answer 48

Soft metals,paint,water tubes

Question 49

Mercury

Answer 49

Metals that is liquid at room temperature,can be absorbed through the skin

Question 50

ph values greater than 7.0 have OH- ion

Answer 50

Basic

Question 51

Ph value less than 7.0 have a H+ ion

Answer 51

Acidic

Question 52

Ph value is 7.0

Answer 52

Neutral

Question 53

Ionic compounds are composed of what

Answer 53

Metal and nonmetal

Question 54

As pressure on gas ___ gas solubility increases

Answer 54

Increases

Question 55

Molecule are composed of two or more __

Answer 55

Elements

Question 56

They are formed from __ of electrons

Answer 56

Sharing

Question 57

Hard water ions ____ the cleaning action of soap

Answer 57

Interfere with

Question 58

In water softener, the resin helps to soften water by exchanging the hard water ions for _____ ions

Answer 58

Sodium

Question 59

Name three Types of water ions

Answer 59

Calcium Iron Magnesium

Question 60

5 indicators of chemical reaction

Answer 60

``` Formation of precipice Evolution of a gas Change in temperature Change in color Production of light Formation of oxide ```

Question 61

Boiling

Answer 61

Physical

Question 62

Melting

Answer 62

Physical

Question 63

Production of light

Answer 63

Chemical

Question 64

Evaporating

Answer 64

Physical

Question 65

Formation of precipitate

Answer 65

Chemical

Question 66

Horizontal row of the periodic table are

Answer 66

Period/series

Question 67

A vertical column of the perotic table are

Answer 67

Groups/family's

Question 68

Events with similar properties are in the same

Answer 68

Family

Question 69

Noble gases family contains elements that are

Answer 69

Balanced

Question 70

How an atom interacts with other atoms is governed largely by the number and arrangement of the atoms

Answer 70

Electrons

Question 71

The worlds supply of water has ____ for billions of years

Answer 71

Stayed the same