Quiz about 2024 Chemistry Review Items

Question 1

How many total atoms are in the compound below?

Accepted Answer

10

Answer

2

Answer

5

Answer

6

Answer

7

Question 2

How many total atoms are in the compound below?

Accepted Answer

5

Answer

3

Answer

4

Answer

6

Question 3

How many atoms of Hydrogen (H) are found in the compound below?

Accepted Answer

12

Answer

2

Answer

5

Answer

6

Answer

9

Question 4

A covalent bond that is a triple bond contains this (TOTAL) amount of shared electrons

Accepted Answer

6

Answer

2

Answer

4

Answer

8

Question 5

How many electrons do MOST atoms need to fill their valence shell?

Accepted Answer

8

Answer

2

Answer

4

Answer

6

Answer

10

Question 6

The octet rule states that:

Accepted Answer

Atoms will lose, gain, or share electrons to obtain a full valence shell

Answer

Bonding in unlikely to occur between oppositely charged ions

Answer

A single covalent bond involves two pairs of shared electrons

Answer

A covalent bond results between two oppositely charged ions

Answer

Halogens often bond with alkaline earth metals

Question 7

Two Nitrogen atoms sharing three pairs of electrons to fill their valence shells with eight electrons each is called a ______ covalent bond.

Accepted Answer

Triple

Answer

Single

Answer

Double

Answer

ionic

Question 8

Which of the following is the correct Lewis Dot diagram for Neon?

Accepted Answer

H

Answer

A

Answer

B

Answer

C

Answer

D

Question 9

How many electrons should chlorine have around its Lewis Dot diagram?

Accepted Answer

7

Answer

5

Answer

17

Answer

35

Question 10

In the Lewis Dot structure of two covalently bonded atoms, a single line between two atoms represents

Accepted Answer

A shared pair of electrons

Answer

Electrostatic Force

Answer

An ionic bond

Answer

The electron cloud

Answer

Valence electrons

Question 11

Which is the correct representation of Carbon Dioxide (CO2)?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 12

In ionic compounds, METALS are referred to as

Accepted Answer

Cations.

Answer

Anions.

Answer

Neutral.

Question 13

An ionic bond is when two atoms....

Accepted Answer

One loses an electron(s) and one gains an electron(s)

Answer

Share their electrons

Answer

Both lose electrons for a full shell

Answer

Both gain electrons till they have a full shell

Question 14

In ionic compounds, nonmetals tend to _________electrons, giving them a ____________________ charge.

Accepted Answer

gain, negative

Answer

gain, positive

Answer

lose, positive

Answer

lose, negative

Question 15

When Lithium (Li) is bonding with Chlorine (Cl), what kind of charge will Chlorine have?

Accepted Answer

-1

Answer

+1

Answer

+8

Answer

-8

Question 16

What changes occur as an aluminum atom, Al, becomes an aluminum ion, Al+3?

Accepted Answer

The aluminum atom loses 3 electrons and the number of protons stays the same.

Answer

The aluminum atom gains 3 electrons and the number of protons stays the same.

Answer

The aluminum atom loses 3 electrons and the number of protons increases.

Answer

The aluminum atom gains 3 electrons and the number of protons increases.

Question 17

What type of bond is the compound shown below?

Accepted Answer

Ionic

Answer

Covalent

Question 18

What type of bond is the compound shown below?

Accepted Answer

Covalent

Answer

Ionic

Question 19

Is the following chemical equation balanced?

Accepted Answer

No

Answer

Yes

Answer

Not enough information given

Question 20

What are the needed coefficients to balance the following chemical equation:

Accepted Answer

2, 2, 1

Answer

1, 2, 1

Answer

2, 1, 1

Answer

1, 1, 2

Question 21

What are the needed coefficients to balance the following chemical equation:

Accepted Answer

3, 2, 1, 1

Answer

2, 3, 1, 3

Answer

2, 3, 1, 1

Answer

2, 2, 1, 1

Question 22

What are the needed coefficients to balance the following chemical equation:

Accepted Answer

1, 1, 1, 2

Answer

1, 2, 1, 1

Answer

1, 1, 2, 2

Answer

2, 2, 1, 1

Question 23

What type of reaction follows this general equation?

Accepted Answer

Combustion

Answer

Synthesis

Answer

Decomposition

Answer

Single Replacement

Answer

Double Replacement

Question 24

What type of reaction is listed below?

Accepted Answer

Double Replacement

Answer

Synthesis

Answer

Decomposition

Answer

Single Replacement

Answer

Combustion

Question 25

What type of reaction is listed below?

Accepted Answer

Single Replacement

Answer

Synthesis

Answer

Decomposition

Answer

Double Replacement

Answer

Combustion

Question 26

What type of reaction is listed below?

Accepted Answer

Combustion

Answer

Synthesis

Answer

Decomposition

Answer

Single Replacement

Answer

Double Replacement

Question 27

What type of reaction is listed below?

Accepted Answer

Decomposition

Answer

Synthesis

Answer

Single Replacement

Answer

Double Replacement

Answer

Combustion

Question 28

What type of reaction is listed below?

Accepted Answer

Synthesis

Answer

Decomposition

Answer

Single Replacement

Answer

Double Replacement

Answer

Combustion

Question 29

What is required to START a chemical reaction?

Accepted Answer

Activation Energy

Answer

Products

Answer

Exothermic

Answer

Endothermic

Question 30

More frequent particle collisions correspond to a:

Accepted Answer

Faster reaction rate.

Answer

Slower reaction rate.

Answer

Constant reaction rate.

Answer

None of the Above.

Question 31

How is a catalyst different from a reactant?

Accepted Answer

A catalyst is a material that increases the rate of a reaction by aiding in lowering the activation energy.

Answer

Catalysts are part of the products generated from the reactants.

Answer

Catalysts are reactants, there is not difference.

Answer

Catalysts are not reactants, they serve no purpose in a reaction.

Question 32

Which letter refers to the release of energy (as heat) in the below image?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 33

Which diagram represents an endothermic reaction?

Accepted Answer

A

Answer

B

Answer

Both A and B show an endothermic reaction.

Question 34

The following graph shows two different reaction pathways for the same overall reaction at the same temperature. 
Based on your knowledge of the effect of an inhibitor on activation energy, which colored line represents the use of an inhibitor in a reaction?

Accepted Answer

Red

Answer

Blue

Answer

Both Red and Blue

Answer

Neither Red Nor Blue

Question 35

Milk contains bacteria, which carry out thousands of chemical reactions as they live and reproduce. At room temperature, those reactions

Accepted Answer

happen faster because the warmer temperature will speed up the reaction rate and the milk will spoil quickly.

Answer

happen slower because the warmer temperature will slow down the reaction rate and the milk will spoil slowly.

Answer

happen slower because a catalyst will slow down the reaction rate  and the milk will spoil slowly.

Answer

happen faster because an inhibitor will speed up the reaction rate and the milk will spoil quickly.

Question 36

Chewing your food to break it up into smaller pieces helps your body to digest it better.   How does this work?

Accepted Answer

Smaller pieces increases the surface area of the food, speeding up the chemical reactions needed to fuel our bodies.

Answer

Smaller pieces increases the surface area of the food, slowing down the chemical reactions needed to fuel our bodies.

Answer

Smaller pieces decreases the surface area of the food, slowing down the chemical reactions needed to fuel our bodies.

Answer

Smaller pieces decreases the surface area of the food, speeding up the chemical reactions needed to fuel our bodies.

Question 37

What is the variable A referring to?

Accepted Answer

Coefficients

Answer

Products

Answer

Chemical Symbol

Answer

Subscript

Answer

Yields

Question 38

What is the variable B referring to?

Accepted Answer

Subscript

Answer

Products

Answer

Coefficients

Answer

Chemical Symbol

Answer

Yields

Question 39

What is the variable C referring to?

Accepted Answer

Yields

Answer

Products

Answer

Coefficients

Answer

Chemical Symbol

Answer

Subscript

Question 40

What is the variable D referring to?

Accepted Answer

Products

Answer

Reactants

Answer

Chemical Symbol

Answer

Subscript

Answer

Yields

Question 41

What is the variable E referring to?

Accepted Answer

State of Matter

Answer

Products

Answer

Reactants

Answer

Chemical Symbol

Answer

Subscript

Question 42

What is the variable F referring to?

Accepted Answer

Chemical Symbol

Answer

Products

Answer

Reactants

Answer

Subscript

Answer

State of Matter

Question 43

An ionic bond is when two atoms....

Accepted Answer

One loses an electron(s) and one gains an electron(s)

Answer

Share their electrons

Answer

Both lose electrons for a full shell

Answer

Both gain electrons till they have a full shell

Question 44

In ionic compounds, nonmetals tend to _________electrons, giving them a ____________________ charge.

Accepted Answer

gain, negative

Answer

gain, positive

Answer

lose, positive

Answer

lose, negative

Question 45

When Magnesium (Mg) is bonding with  Oxygen (O), what kind of charge will Magnesium have?

Accepted Answer

+2

Answer

-2

Answer

+8

Answer

-8

Question 46

A covalent bond that is a triple bond contains this (TOTAL) amount of shared electrons

Accepted Answer

6

Answer

2

Answer

4

Answer

8

Question 47

Two hydrogen atoms sharing one pair of electrons to fill their valence shells with two electrons each is called a ______ covalent bond.

Accepted Answer

Single

Answer

Double

Answer

Triple

Answer

ionic

Question 48

This could be the Lewis Dot diagram of which element?

Accepted Answer

O

Answer

Mg

Answer

Cl

Answer

B

Question 49

In the lewis dot structure of two covalently bonded atoms, a line between a dot of each of two atoms represents

Accepted Answer

A shared pair of electrons

Answer

Electrostatic Force

Answer

An ionic bond

Answer

The electron cloud

Answer

Valence electrons

Question 50

What type of bond is the compound shown below?

Accepted Answer

Covalent

Answer

Ionic

2024 Chemistry Review Items

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