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Worksheets

Basic Chemistry

Total questions: 40

Worksheet time: 41mins

Name
Class
Date
1.
What are the building blocks of MATTER?
a)
Atoms
b)
Cells
c)
Protons
d)
Neutrons
2.
What are the positively charged particles in an atom?
a)
Protons
b)
Neutrons
c)
Electrons
3.
Electrons have what charge?
a)
Negative
b)
Positive
c)
Neutral
 (No Charge)
4.
Neutrons have what charge?
a)
Negative
b)
Positive
c)
Neutral
 (No Charge)
5.
The nucleus of an atom is made up of...
a)
Protons and Neutrons
b)
Neutrons and Electrons
c)
Protons and Electrons
6.
The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?
a)
19
b)
39
c)
20
d)
Impossible to tell
7.
The image shows the periodic grid for POTASSIUM. What is Potassium's atomic mass?
a)
19
b)
39
c)
20
d)
Impossible to tell
8.
The image shows the periodic grid for POTASSIUM. How many PROTONS are found in a potassium atom?
a)
19
b)
39
c)
20
d)
Impossible to tell
9.
The image shows the periodic grid for POTASSIUM. How many ELECTRONS are found in a potassium atom?
a)
19
b)
39
c)
20
d)
Impossible to tell
10.
The image shows the periodic grid for POTASSIUM. How many NEUTRONS are found in a potassium atom?
a)
19
b)
39
c)
20
d)
Impossible to tell
11.
A(n) ____________________ is a pure substance made of a single type of atom and cannot be broken down.
a)
Element
b)
Compound
c)
Molecule
d)
Mixture
12.
What does the ATOMIC MASS tell us about an atom?
a)
Protons + Neutrons
b)
Protons + Electrons
c)
Neutrons + Electrons
13.
What is the atomic number of this atom?
a)
1
b)
3
c)
4
d)
7
14.

What is the atomic symbol?

a)

Mn

b)

MN

c)

M

d)

Manganese

15.

What is the atomic mass?

a)

25

b)

54.938

c)

Mn

d)

Manganese

16.

What is the atomic number?

a)

25

b)

54,928

17.

How many protons does this element have?

a)

55

b)

30

c)

25

18.

How many neutrons does this element have?

a)

55

b)

30

c)

25

19.

How do you find the number of neutrons?

a)

Electrons + Protons

b)

Electrons - Protons

c)

Atomic Mass - Atomic Number

d)

Atomic Mass + Atomic Number

20.

Covalent bonds are formed by sharing electrons?

a)

True

b)

False

21.

Ionic bonds are formed by transferring electrons?

a)

True

b)

False

22.

Covalent bonds are shared between ...

a)

Two metals

b)

A metal and non-metal

c)

Two non-metals

23.

Ionic bonds are shared between ...

a)

Two metals

b)

Metals and non-metals

c)

Two non-metals

24.

Valance electrons are located where?

a)

In the nucleus

b)

In the 1st shell

c)

The outer most shell

25.

How many electrons are in 1st, 2nd, and 3rd shells?

a)

2, 4, 6

b)

2, 8, 16

c)

2, 8,18

d)

2, 4, 8

26.

How many total atoms are in this formula Li2SO4 ?

a)

6

b)

4

c)

3

d)

7

27.

How many total atoms are in this formula 3 H2O ?

a)

9

b)

7

c)

3

d)

5

28.

How many chlorine atoms are there in this formula NH4Cl

a)

4

b)

3

c)

1

d)

2

29.

How many oxygen atoms are in this formula 3 Al2O3 ?

a)

3

b)

6

c)

9

30.

What are physical changes?

a)

changes in size or shape

b)

changes to something different

31.

What are chemical changes?

a)

changes in size or shape

b)

changes into something different

32.

Which substance has a chemical change with vinegar?

a)

flour

b)

corn starch

c)

salt

d)

baking soda

33.

What is the chemical symbol for hydrogen

a)

H

b)

Hy

c)

Hg

34.

What is the chemical symbol for oxygen?

a)

Ox

b)

Oy

c)

O

35.

What is the chemical symbol for silicon?

a)

S

b)

Si

c)

Sc

36.

What sphere of Earth is all of the water?

a)

hydrosphere

b)

atmosphere

c)

lithosphere

d)

biosphere

37.

What sphere of the Earth is all of the air?

a)

hydrosphere

b)

atmosphere

c)

biosphere

d)

lithosphere

38.

What sphere of the Earth is all of the land?

a)

hydrosphere

b)

atmosphere

c)

lithosphere

d)

biosphere

39.

What sphere of Earth is all of the life?

a)

hydrosphere

b)

atmosphere

c)

lithosphere

d)

biosphere

40.

What is the most abundant element in the atmosphere?

a)

Nitrogen

b)

Oxygen

c)

Argon

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