Science Final

Front 1

Snow forming

Back 1

Physical

Front 2

Cooking a potato

Back 2

Chemical

Front 3

Dissolving sugar in water

Back 3

Physical

Front 4

Melting butter

Back 4

Physical

Front 5

Forest fire

Back 5

Chemical

Front 6

Water evaporating

Back 6

Physical

Front 7

Rust forming

Back 7

Chemical

Front 8

Dynamite exploding

Back 8

Chemical

Front 9

Salt

Back 9

Compound

Front 10

Dirt

Back 10

Mixture

Front 11

Brass

Back 11

Mixture

Front 12

Gold

Back 12

Element

Front 13

Sugar

Back 13

Compound

Front 14

Rust

Back 14

Compound

Front 15

Silver

Back 15

Element

Front 16

Air

Back 16

Mixture

Front 17

Vinegar

Back 17

Compound

Front 18

Copper

Back 18

Element

Front 19

Steel

Back 19

Mixture

Front 20

Baking soda

Back 20

Compound

Front 21

Ductile

Back 21

Metal

Front 22

High density

Back 22

Metal

Front 23

Good conductor

Back 23

Metal

Front 24

Malleable

Back 24

Metal

Front 25

Low melting point

Back 25

Non metal

Front 26

Shiny

Back 26

Metal

Front 27

High melting point

Back 27

Metal

Front 28

Low density

Back 28

Non metal

Front 29

Shared electron

Back 29

Covalent bonding

Front 30

Free electron

Back 30

Metallic bonding

Front 31

Transferred electrons

Back 31

Ionic bonding

Front 32

Between non metal

Back 32

Covalent bonding

Front 33

Between metals and nonmetals

Back 33

Ionic bonding

Front 34

Conducts electricity

Back 34

Metallic bonding

Front 35

Forms between elements with similar high electronegativities

Back 35

Covalent bonding

Front 36

pH 7

Back 36

Neither

Front 37

Hydroxide ion

Back 37

Base

Front 38

Bitter taste

Back 38

Base

Front 39

Corrodes metals

Back 39

Acid

Front 40

pH 11

Back 40

Base

Front 41

Turns blue litmus paper red

Back 41

Acid

Front 42

Hydronium ion

Back 42

Acid

Front 43

Sour taste

Back 43

Acid

Front 44

Sweet taste

Back 44

Neither

Front 45

pH 3

Back 45

Acid

Front 46

Feels slippery

Back 46

Base

Front 47

the unit of mass for the atoms is called the AMU

Back 47

.

Front 48

Less energetic electrons orbit closer to the nucleus of the atom

Back 48

.

Front 49

Electron structures determine the chemical properties of an element

Back 49

.

Front 50

The mass of electrons is so much less than of neutrons and protons

Back 50

.

Front 51

Electrons can jump from one energy level to another

Back 51

.

Front 52

In Athen opposite charges attract each other

Back 52

.

Front 53

Atoms bond to become more stable

Back 53

.

Front 54

The attraction between covalent molecules is not as strong as in ionic compounds

Back 54

.

Front 55

Chemical bond involves only the valence electron

Back 55

.

Front 56

Atoms with similar low electronegativity often form metallic bonds

Back 56

.

Front 57

Atoms with nearly field valency levels have high electronegativity

Back 57

.

Front 58

Element changing from a solid to a liquid is not a sign that a chemical change has taken place

Back 58

.

Front 59

Some elements have more than one oxidation number

Back 59

.

Front 60

The number of atoms of each element must be the same on both sides of the equation

Back 60

.

Front 61

Elements or ions with positive oxidation numbers should always go first in the formula

Back 61

.

Front 62

A permanent color change is a sign that a chemical reaction has taken place

Back 62

.

Front 63

If you put blue litmus paper in a solution and it turns red it is definitely an acid

Back 63

.

Front 64

H3O+ ions and OH- ions will cancel each other out if in equal amounts

Back 64

.

Front 65

Suspension

Back 65

A mixture where particles settle out

Front 66

Stable substances

Back 66

An element that doesn't combine easy

Front 67

Reactive substances

Back 67

Combines easy with other elements

Front 68

Molecules

Back 68

The smallest part of the atom

Front 69

Element

Back 69

A substance that can't be broken down

Front 70

Diatomic

Back 70

Two atoms of the same element that combines

Front 71

Compound

Back 71

A substance that is chemically combined

Front 72

Colloid

Back 72

A permanent hedrogeneous mixture

Front 73

Atoms

Back 73

Small particles that make up the universe

Front 74

Analysis

Back 74

Studying materials by breaking them down

Front 75

Polyatomic

Back 75

Molucles that are composed of two or more different elements

Front 76

Organic

Back 76

Compound that us made up with carbon

Front 77

Metallic bond

Back 77

Positive ions imbedded in negative ions

Front 78

Lewis dot structure

Back 78

A shortcut to show the bonding process

Front 79

Ionic bond

Back 79

1 or more electrons that are transferred

Front 80

Formula unit

Back 80

The simplist repeating unit

Front 81

Electronegativity

Back 81

Rellitive ability yo attract atoms

Front 82

Electrolytes

Back 82

A substance that produces ions upon dissolving

Front 83

Diatomic

Back 83

Two atoms with similar electronegativity that forms covalent bonds

Front 84

Crystal lattice

Back 84

A repeating, three dimensional arrangement of atoms or ions

Front 85

Covalent bond

Back 85

A chemical in which two atoms share a pair of electrons

Front 86

Cation

Back 86

Positive ion

Front 87

Anion

Back 87

Negative ion