Unit 2 Study Guide

Front 1

Ionic bonds are between what?

Back 1

Nonmetals & Metals

Front 2

Do ionic bonds share or gain?

Back 2

Gain

Front 3

Covalent bonds are between what?

Back 3

Nonmetals only

Front 4

Do covalent bonds share or gain?

Back 4

Share

Front 5

NaCl2 > Na + Cl

Which side of the equation is the product? Left or Right

Back 5

Right

Front 6

NaCl2 > Na + Cl

Which side of the equation are the reactants? Left or Right

Back 6

Left

Front 7

Balance the chemical formulas:

_____ Fe + _____ H2O > ____ Fe3-O4 + _____ H2

Back 7

3 Fe + 4 H2O > 1 Fe3-O4 + 4 H2

Front 8

Balance the chemical formula.

___ Al2-O3 > ___ Al + ___ H2

Back 8

2 Al2-O3 > 4 Al + 3 O2

Front 9

Balance the chemical formulas.

___ P4 + ___ O2 > ___ P4-O10

Back 9

1 P4 + 5 O2 >1 P4-O10

Front 10

Which law says that matter cannot be created or destroyed in any process?

Back 10

B. Law of Conservation of Matter

Hint 10

A. Law of Degenerating of Matter

B. Law of Conservation of Matter

C. Law of Matter Entropy

Front 11

Explain how this law explains why equations have to be balance:

Back 11

Has to be equal on both sides

Front 12

Protons are located where?

Back 12

Inside the nucleus

Front 13

What charge do protons have?

Back 13

Positive

Front 14

Electrons are located where?

Back 14

Outside the nucleus

Front 15

What charge do electrons have?

Back 15

Negative

Front 16

What are electrons involved in?

Back 16

Rings

Front 17

Neutrons are located where?

Back 17

Inside the nucleus

Front 18

What charge do neutrons have?

Back 18

Neutral-0

Front 19

Who used gold foil?

Back 19

Rutherford

Front 20

What are the ways the periodic table is arranged? Name all.

Back 20

1. Atomic number/mass

2. Groups

3. Periods

Front 21

What is the nonreactive group/family called?

Back 21

Noble gasses

Front 22

Describe a physical change.

Back 22

Any change that alters fprm or appearance of a substance but does not change it into another substance.

Front 23

Describe a chemical change.

Back 23

A change in matter that produces one or more new substances.

Front 24

What makes a positive ion?

Back 24

A positive charge

Front 25

What is exothermic reaction?

Back 25

The energy released as the products form is greater than the energy required to break the bonds of the reactants.

Front 26

Which element is very special on the periodic table?

Back 26

Hydrogen

Front 27

What are the most reactive elements? Least reactive (don't include non reactive)?

Back 27

Alkali metals

Front 28

If the total number of atoms before a reaction is equal to the total after. This is an example of what?

Back 28

Law of Conservation of Mass

Front 29

Phyical or Chemical?

Ripping paper

Back 29

Physical

Front 30

Phyical or Chemical?

Baking soda and vinegar produces bubbles

Back 30

Chemical

Front 31

Phyical or Chemical?

Copper sulfate and aluminum produces smoke and changes aluminum to rust color

Back 31

Chemical

Front 32

Phyical or Chemical?

Melted Hershey bar

Back 32

Physical

Front 33

Physical or Chemical?

Precipitate is formed and sinks to botton of test tube

Back 33

Chemical

Front 34

Physical or Chemical?

Density

Back 34

Physical

Front 35

Physical or Chemical?

Changes state of matter

Back 35

Physical

Front 36

Physical or Chemical?

White carnations in a vase with colored water, flowers turn blue

Back 36

Physical

Front 37

Physical or Chemical?

Logs burning in a fireplace

Back 37

Chemical

Front 38

Physical or Chemical?

Statue of Liberty changing from copper to green

Back 38

Chemical

Front 39

Physical or Chemical?

Odor forms after mixing two chemicals

Back 39

Chemical

Front 40

Physical or Chemical?

Broken Meterstick

Back 40

Physical