Quiz about Chemical Reactions Review

Question 1

What do we look at to determine charge?

Accepted Answer

Group Number

Answer

Atomic Mass

Answer

Period Number

Question 2

How many valence electrons do most elements want?

Accepted Answer

8

Answer

2

Answer

4

Answer

0

Question 3

What is the charge of Gallium (Ga)

Accepted Answer

+3

Answer

+/- 4

Answer

-3

Answer

+1

Question 4

What is the charge of Terillium (Te)

Accepted Answer

-2

Answer

+5

Answer

+2

Answer

-6

Question 5

What is the charge of Phosphorus (P)

Accepted Answer

-3

Answer

-1

Answer

-5

Answer

+3

Question 6

How does an ionic bond form

Accepted Answer

Transferring electrons

Answer

Sharing electrons

Question 7

How does an covalent bond form

Accepted Answer

Sharing electrons

Answer

Transferring electrons

Question 8

What is Hydrogen

Accepted Answer

Nonmetal

Answer

Metal

Question 9

What is Oxygen

Accepted Answer

Nonmetal

Answer

Metal

Question 10

What is Sodium

Accepted Answer

Metal

Answer

Nonmetal

Question 11

What is Lithium

Accepted Answer

Metal

Answer

Nonmetal

Question 12

What is Nitrogen

Accepted Answer

Nonmetal

Answer

Metal

Question 13

Which is a covalent compound?

Accepted Answer

H2O

Answer

NaCl

Answer

AlF3

Answer

MgO

Question 14

Which is a covalent compound?

Accepted Answer

CO2

Answer

Be3N2

Answer

PbO2

Answer

Ca2C

Question 15

Which is a ionic compound?

Accepted Answer

PbO2

Answer

H2O

Answer

CO2

Answer

SF2

Question 16

How many bonds are formed between Carbon and each Oxygen in CO₂

Accepted Answer

2

Answer

1

Answer

0

Answer

4

Question 17

How many bonds are formed between Carbon and each Hydrogen in CH₄

Accepted Answer

1

Answer

0

Answer

2

Answer

4

Question 18

Why do we balance chemical equations?

Accepted Answer

To show the Conservation of Mass

Accepted Answer

So we have a balanced equation

Accepted Answer

To know how much we need

Answer

Hoover/Montijo said to

Question 19

What is the 2 in CO₂ called

Accepted Answer

Subscript

Answer

Coefficient

Answer

Compound Formula

Answer

Element Symbol

Question 20

What does the subscript in a compound formula tell us

Accepted Answer

How many of each element is in the compound

Answer

How many of that compound there are

Answer

What elements are bonded

Answer

What the element is

Question 21

What does the 3 in 3CO₂ called

Accepted Answer

Coefficient

Answer

Subscript

Answer

Compound Formula

Answer

Element Symbol

Question 22

What does the coefficient in a compound formula tell us

Accepted Answer

How many of that compound there are

Answer

What elements are bonded

Answer

What the element is

Answer

How many of each element is in the compound

Question 23

What can we change when balancing a chemical equation

Accepted Answer

Coefficient

Answer

Subscript

Answer

Compound Formula

Answer

Element Symbol

Question 24

An exothermic reaction ________ more bonds than it ________

Accepted Answer

Breaks, Makes

Answer

Makes, Breaks

Question 25

An exothermic reaction ________ energy

Accepted Answer

Creates

Answer

Requires

Question 26

An endothermic reaction ________ more bonds than it ________

Accepted Answer

Makes, Breaks

Answer

Breaks, Makes

Question 27

An endothermic reaction ________ energy

Accepted Answer

Requires

Answer

Creates

Question 28

In the process of ionic bonding, ions come together because

Accepted Answer

positive and negative ions attract

Answer

opposite charges repel

Answer

salt is magnetic

Answer

like charges attract each other

Question 29

This image shows the bonding between Lithium and Fluorine. What does the red arrow show?

Accepted Answer

electrons being transferred to Fluorine

Answer

electrons being shared

Answer

electrons being transferred to Lithium

Answer

electrons being destroyed

Question 30

USE THE PERIODIC TABLE

How many valence electrons does carbon have?

Accepted Answer

4

Answer

12

Answer

6

Answer

14

Question 31

How many valence electrons does Mg have? (use the PTable)

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Answer

5

Question 32

How many valence electrons does Lithium have?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 33

What is the number of valence electrons for Beryillum?

Accepted Answer

2

Answer

1

Answer

4

Answer

7

Question 34

How many Valence Electrons are on Oxygen

Accepted Answer

6

Answer

2

Answer

7

Answer

1

Question 35

USE THE PERIODIC TABLE

How many valence electrons does sodium have?

Accepted Answer

1

Answer

2

Answer

3

Answer

4

Question 36

How many valence electrons are in Phosphorus?

Accepted Answer

5

Answer

15

Answer

4

Answer

31

Question 37

Examine the image: How many bonds are formed looking at the model of the compound? And also indetify what type of bond is formed.

Accepted Answer

4 bonds; covalent

Answer

2 bonds; covalent

Answer

4 bonds; metallic

Answer

2 bonds; ionic

Question 38

Which type of bond involves atoms giving up and gaining electrons?

Accepted Answer

Ionic bonds

Answer

Covalent bonds

Answer

Metallic bonds

Answer

Electro bonds

Question 39

What type of chemical bond is being shown in the F₂ molecule?

Accepted Answer

single covalent bond

Answer

double covalent bond

Answer

triple covalent bond

Answer

quadruple covalent bond

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