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Unit 7: Chemistry Atoms and Periodic Table

Total questions: 40

Worksheet time: 30mins

Name
Class
Date
1.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
2.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
3.
Which of the following is a negatively charged subatomic particle?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
4.
The particles that are found in the nucleus of an atom are
a)
neutrons and electrons
b)
electrons only
c)
protons and neutrons
d)
protons and electrons
5.
Beryllium has how many protons?
a)
4
b)
9.0122
c)
2
d)
13.0122
6.

The cloud-like space that electrons travel around:

a)

nucleus

b)

shell

c)

neutrons

d)

Oort cloud

7.

Protons and neutrons are found in the center of the atom called the:

a)

nucleus

b)

neutron

c)

shell

d)

cell

8.

Classification system for elements is called:

a)

Elements

b)

Periods

c)

The Periodic Table of Elements

d)

Families

9.

The subatomic particles are called:

a)

protons, nucleus and electrons

b)

protons, electrons and neutrons

c)

protons, positives and negatives

d)

cloud, shell and quarks

10.

Substances that have only one kind of atom are called:

a)

elements

b)

nitrogen

c)

electrons

d)

nucleus

11.

Electrons have a _____ charge.

a)

neutral

b)

negative

c)

positive

d)

both positive and negative

12.

What is the study of matter?

a)

Chemistry

b)

Biology

c)

Earth Science

d)

Physics

13.

_____ is what scientists think atoms are like.

a)

Chemistry

b)

The box

c)

The atomic structure

d)

The atomic theory

14.

The abbreviation for an element:

a)

element name

b)

atomic number

c)

chemical symbol

d)

atomic symbol

15.

The scientist who invented the classification system for the elements:

a)

Dimitri Mendeleev

b)

Niels Bohr

c)

Sir Isaac Newton

d)

Albert Einstein

16.

What is the sum of an atom's protons and neutrons called?

a)

atom

b)

atomic theory

c)

atomic mass

d)

atomic number

17.

The columns on the periodic table that are color coded and describe the number of electrons in the outer shell of the atomic structure of the element:

a)

families

b)

groups

c)

periods

18.

The rows or periods on the periodic table describe:

a)

the same number of outer electrons

b)

the same number of shells

c)

the same number of protons

d)

the same mass

19.

The _____ is based on the number of protons in the nucleus of the atom.

a)

atomic structure

b)

periodic table of the elements

c)

atomic number

d)

atomic mass

20.

What subatomic particle is represented by this symbol (+):

a)

neutron

b)

proton

c)

electron

21.

What subatomic particle is represented by this charge (-):

a)

neutron

b)

proton

c)

electron

22.

Why do the electrons surround the nucleus?

a)

the negative electrons are attracted to the neutral neutrons

b)

the negative electrons are repelled by the neutral neutrons

c)

the negative electrons are attracted to the positive protons

d)

the negative electrons are repelled by the positive protons

23.

All matter is made of _____.

a)

light

b)

energy

c)

cells

d)

atoms

24.

Electrons have a _____ charge.

a)

neutral

b)

negative

c)

positive

d)

both positive and negative

25.

The Atomic number is known as the _______

a)

Number of electrons in an atom

b)

Number of Protons in an atom

c)

Number of neutrons in an atom

d)

Number of Protons and electrons in an atom

26.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

27.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
28.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
29.
a)
Periods
b)
Groups
30.
a)
Periods
b)
Groups
31.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
32.
a)
energy levels
b)
valence electrons
c)
protons
d)
neutrons
33.

Which element is found in group 2, period 6?

a)

Oxygen (O)

b)

Barium (Ba)

c)

Selenium (Se)

d)

Carbon (C)

34.

Which element has similar chemical properties as sodium but has 7 energy levels?

a)

Francium (Fr)

b)

Cesium (Cs)

c)

Rubidium (Rb)

d)

Potassium (K)

35.

How many Valence Electrons does this element have?

a)

3

b)

2

c)

1

d)

4

36.

How many energy levels does this element have?

a)

6

b)

2

c)

4

d)

5

37.
a)
2
b)
8
c)
3
d)
13
38.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

39.

How many valence electrons?

a)

2

b)

4

c)

6

d)

8

40.

How many valence electrons?

a)

2

b)

3

c)

4

d)

5

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