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8th Grade Chemistry Test

Total questions: 50

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

Scavenger Hunt Clue: I am a noble gas located in Period 2 of the Periodic Table. Which element am I?

a)

Neon

b)

Argon

c)

Helium

d)

Krypton

2.
a)
Periods
b)
Groups
3.
a)
Periods
b)
Groups
4.

I am a nonmetal


I am in period 2


I am in group 16/6A

a)

Ba

b)

Si

c)

Ba

d)

O

5.

These are found on the Periodic Table.

a)

Compounds

b)

Elements

c)

Mixtures

6.

What does the C represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol 

7.

What does 12.011 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol 

8.

What does the 6 represent?

a)

atomic mass

b)

atomic number

c)

element name

d)

chemical symbol 

9.

Which element is this?

a)

Nickel

b)

Neon

c)

Sodium

d)

Nitrogen

10.

Name this element.

a)

Argon

b)

Chlorine

c)

Aluminum

d)

Boron

11.

Name this element.

a)

Neon

b)

Magnesium

c)

Sodium

d)

Manganese

12.

What is the atomic number of this atom?

a)

2

b)

4

c)

6

d)

8

13.

What is this element?

a)

Beryllium (atomic #4)

b)

Boron (atomic #5)

c)

Carbon (atomic #6)

d)

Nitrogen (atomic #7)

14.

What is a valence electron?

a)

Electrons in the first energy shell

b)

Electrons in the second energy shell

c)

Electrons in the outer shell

d)

Total number of electrons

15.

What element is represented in this Bohr Model?

a)

Carbon

b)

Hydrogen

c)

Aluminum

d)

Lithium

16.

What is the atomic number of this element?

a)

17

b)

18

c)

35

d)

35.453

17.

How many Hydrogen are in 4H2O?

a)

6

b)

8

c)

2

d)

4

18.

How many Oxygen are in H2O?

a)

1

b)

2

c)

0

d)

4

19.

How many Magnesium are in 10MgCl2?

a)

10

b)

5

c)

20

20.

2H2 + O2 ----> 2H2O What is the product?

a)

------>

b)

2H2O

c)

2H2+ O2

21.

2H2 + O2 --------> 2H2O What  are the reactants?

a)

----->

b)

2H2O

c)

2H2 +O2

22.

How many O's are in Al₂(SO₄)₃

a)

4

b)

12

c)

7

d)

24

23.

Number of H in 3(NH₄)₂CrO₄

a)

4

b)

2

c)

8

d)

24

24.

How many atoms are there TOTAL in:
H2SO4

a)

6

b)

5

c)

7

d)

3

25.

How many Sodium (Na) are in 6NaCl?

a)

1

b)

12

c)

6

26.

Balance this equation.
_Mg + _Cl2 --> _MgCl2

a)

1, 2,1

b)

already balanced

c)

2,1,1

d)

1,1,2

27.

Balance this equation
_N2 + _H2 --> _NH3

a)

1,2,3

b)

1,3,2

c)

1,1,2

d)

2,1,1

28.

N2 + H2 = NH4

a)

Balanced

b)

Unbalanced

29.

What does the Law of Conservation of Mass state?

a)

Matter cannot be gained or lost in a chemical reaction.

b)

Matter can only be lost in a chemical reaction.

c)

Matter can only be gained in a chemical reaction.

d)

Matter can be gained and lost in a chemical reaction. 

30.

Which number should go in the blank?
_ H2 + O2 -> 2 H2O

a)

1

b)

2

c)

3

d)

0

31.

Which problem is balanced?

a)

PbO2 + 2H2

b)

SO2 + H20 --> H2SO4

c)

2Na + 2H2O --> 2NaOH + H2

32.

A reactant is...

a)

The substances that you start with, which undergo a chemical reaction.

b)

The substances that you ended with, which underwent a chemical reaction.

c)

A set of chemical symbols in a compound, represented by elements and numbers.

d)

Made of one type of material (atoms or molecules) all the way through.

33.

A product is...

a)

The substances that you start with, which undergo a chemical reaction.

b)

Made of one type of material (atoms or molecules) all the way through.

c)

The basic unit of matter that defines a chemical element.

d)

The substances that you ended with, which underwent a chemical reaction.

34.

Elements in the same vertical column of the periodic table; also called family.

a)

Compound

b)

Mixture

c)

Groups

d)

Period

35.

What subatomic particles would you find in the nucleus of an atom?

a)

Protons only

b)

Protons and Neutrons

c)

Neutrons and Electrons

d)

Protons and Electrons 

36.

Which of the following is the correct chemical symbol for the element carbon?

a)

Ca

b)

Cr

c)

Cb

d)

C

37.

How many Protons does Lithium have?

a)

1

b)

10

c)

3

d)

7

38.

What is the charge of a Neutron?

a)

-1

b)

0

c)

+1

39.

What is the charge of a Proton?

a)

-1

b)

0

c)

+1

40.

What is the charge of an electron?

a)

-1

b)

0

c)

+1

41.

A substance that is made up of two or more elements that are chemically bonded.

a)

compound

b)

oxidant

c)

element

d)

reactant

42.

A substance that cannot be broken down into a simpler substance through chemistry.

a)

oxidant

b)

product

c)

element

d)

compound

43.

In a chemical reactions mass can never be created or destroyed.

a)

reactant

b)

law of conservation of mass.

c)

combustion reaction

d)

synthesis reaction

44.

Which subatomic particle has no electric charge?

a)

Electron

b)

Proton

c)

Neutron

d)

Positron

45.

How many Chlorine atoms are in 5Cl2?

a)

1

b)

2

c)

10

d)

5

46.

Which element is located in Group 1 and Period 3 of the Periodic Table?

a)

Sodium

b)

Potassium

c)

Calcium

d)

Magnesium

47.

Label the following periodic table

a)

metals

b)

nonmetals

c)

matalloids

d)

transition metals

1
2
3
4
1)
2)
3)
4)
48.

Which element is on group 5 period 5?

A
B
C
D
49.
Question Image

Match the following

a)

Ca

1.

Symbol

b)

20

2.

Atomic Number (Protons)

c)

40

3.

Atomic Mass (protons + neutrons)

d)

Calcium

4.

Common Name

50.

Which element is on group 18 period 1?

A
B
C
D

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