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Domain 1: Atoms, Nuclear, and the Periodic Table

Total questions: 55

Worksheet time: 46mins

Name
Class
Date
1.

An element that scientists are trying to classify is shiny, conductive, loses electrons, and forms a +1 oxidation state. This element is:

a)

A nonmetal in the halogen family

b)

A metal in the alkaline earth metals

c)

A nonmetal in the chalcogens (Oxygen) family

d)

A metal in the alkali metal family (Group 1A)

2.

The atomic number of Beryllium is 4. Its mass number is 9.0122. How many neutrons does an atom of Beryllium have in its nucleus?

a)

4

b)

4.0122

c)

5.0122

d)

6

3.

Isotopes of an element have different number of ___________ and therefore have different masses.

a)

Proton

b)

Neutron

c)

Electon

4.

What is the difference between Neon-20 and Neon-22?

a)

They have different numbers of electrons.

b)

They have different numbers of neutrons.

c)

Only 1 is radioactive.

d)

No difference.

5.
What is the atomic number of this atom?
a)
4
b)
5
c)
9
d)
none of the above
6.

How many dots would you put around carbon, a group 14 element?

a)

4

b)

6

c)

8

d)

18

7.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

8.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

9.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
10.

How many valence electrons does Phosphorus Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

11.

How many valence electrons does Sodium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

12.

How many valence electrons does Boron Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

13.
Two reactions occur that do not obey the Law of Conservation of Mass. The first reaction involves light elements forming heavier ones. The second reaction has heavy elements forming lighter ones. Which statement describes these reactions?
a)
Both reactions may be nuclear fusion
b)
Both reactions may be nuclear fission
c)
The first reaction is nuclear fusion, and the second is nuclear fission
d)
The first reaction is nuclear fission, and the second is nuclear fusion
14.

Has a mass of 4, with 2 protons.

a)
Alpha
b)
Beta
c)
Gamma
15.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
16.
Has the symbol
a)
Alpha
b)
Beta 
c)
Gamma
17.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
18.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
19.

Which of the following is an example of a situation in which exothermic chemical reactions occur?

a)

Ice cubes melt into water

b)

Boiling pots of water turn to steam

c)

Fireworks explode during a holiday.

d)

Pieces of KCl dissolve in water.

20.

What number should precede H2 in the chemical equation below in order for the equation to be balanced?

___ H2 +N2 -----> 2NH3

a)

1

b)

2

c)

3

d)

4

21.

As you move from left to right across a row of elements in the periodic table, what happens to the number of neutrons in a typical atom?

a)

It stays the same

b)

It increases

c)

It decreases

d)

It decreases until you reach the middle and then it increases.

22.

Aluminum oxide, Al2O3, is produced by combining Al3+ and O2-particles. What type of compound has been formed?

a)

covalent

b)

ionic

c)

metallic

d)

molecular

23.

An ionic bond typically forms between certain types of elements. Which pair of elements will form an ionic compound?

a)

Na and Cu

b)

K and Cl

c)

Ne and O

d)

Li andMg

24.

To use radioactive dating for a substance, you must know the substance's

a)

melting point

b)

half-life

c)

rate of weathering or erosion

d)

heat of reaction

25.

Which group of has eight valence electrons in its elemental form?

a)

noble gases

b)

alkaline earth metals

c)

halogens

d)

alkali metals

26.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
27.
The substances listed on the right side of a chemical equation are the
a)
Yields
b)
Reactants
c)
Products
d)
Precipitates
28.
In the equation,          2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
29.

Determined whether the following equation is balanced or unbalanced. Ag + O2 ---> 2Ag2O

a)

Balanced

b)

Unbalanced

30.

In order for an equation to be balanced, there must be ...

a)

an equal amount of atoms on both sides

b)

a greater mass on the product side

c)

a greater mass on the reactant side

d)

elements with the same atomic # on both sides

31.
In an endothermic reaction, heat is ...
a)
taken in or absorbed
b)
given out or released 
32.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
33.
Ice melting
a)
Chemical Change
b)
Physical Change
34.
a solute whose water solution conducts electricity is called a(n)
a)
nonconductor
b)
electrolyte
c)
nonelectrolyte
d)
aqueous solution
35.

Balance the following chemical equation:

____KClO3 → ____KCl + ____O2

a)

2KClO3 → 4KCl + O2

b)

4KClO3 → 2KCl + 3O2

c)

2KClO3 → 2KCl + 3O2

36.
In chemical reactions, what does the principle of conservation of mass mean?
a)
Matter is not created or destroyed.
b)
The total mass of the reactants is greater than the total mass of the products.
c)
The total mass of the reactants is less than the total mass of the products.
d)
Matter is not changed.
37.

Which type of chemical reaction has two or more reactants to make one product?

a)

combustion

b)

single displacement

c)

double displacement

d)

synthesis

e)

decomposition

38.

Identify the following chemical reaction.

2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

39.

Identify the following chemical reaction.

3 HBr + 1 Al(OH)3 ----> 3 H­2O + 1 AlBr3

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

40.

Identify the following chemical reaction.

Pb + FeSO4 ----> PbSO4 + Fe

a)

Synthesis (or combination)

b)

Decomposition

c)

Single displacement

d)

Double displacement

41.

What reaction has the following general formula:

AB --> A + B

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

42.

What reaction has the following general formula:

A + CD --> C + AD

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

43.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

44.

What reaction has the following general formula:

A + B --> AB

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

45.

Which phrase describes what happens to atoms in a chemical reaction?

a)

never lost or gained, just rearranged

b)

sometimes lost, never rearranged

c)

sometimes lost, gained, or rearranged

d)

lost or gained, never rearranged

46.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
47.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

48.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

49.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
50.

After the third half-life, how much of the sample is left?

a)

1/2

b)

1/3

c)

1/16

d)

1/8

51.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

52.
Name the following compound: 
N2O4
a)
dinitrogren tetraoxide
b)
tetranitrogen dioxide
c)
nitrogen oxide
d)
dinitrogen tetraoxygen
53.
Name the following compound:
NF3
a)
nitrogen triflouride
b)
mononitrogen triflouride
c)
nitrogen flouride
d)
tetranitroflouide
54.

The positive ions tend to _____________ electrons.

a)

lose

b)

gain

55.

The negative ions tend to _____________ electrons.

a)

lose

b)

gain

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