Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit 1 Chemistry

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.
The element Tellurium has the atomic mass of 127.60 and its atomic number is 52. How many neutrons are in the element Tellurium?
a)
179.60
b)
127.60
c)
52
d)
76
2.
The inner energy level can only hold ______ electrons.
a)
1
b)
0
c)
2
d)
18
3.
The largest amount of electrons the 3rd energy level can hold is?
a)
18
b)
unlimited amount
c)
2
d)
8
4.
Is the Bohr Model for the element Selenium (Se) correct?
a)
yes
b)
no
5.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
6.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
7.
Water is an element?
a)
true
b)
false
8.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
9.
The central region of an atom where its neutrons and protons are is its 
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
10.
An atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
11.
True or False? Neutrons have a negative charge
a)
True
b)
False
12.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
13.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
14.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
15.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
16.
electrons have this type of charge?
a)
negative
b)
positive
c)
neutral
17.
Most of the mass in an atom is concentrated in the...
a)
electrons
b)
nucleus
c)
protons
d)
empty space
18.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
19.
Atoms make up, what?
a)
Everything living and nonliving
b)
Energy
20.
A part of the atom that has a negative charge is?
a)
Proton
b)
electron
c)
neutron
21.
The part of the atom that is moving around the nucleus is called?
a)
electron
b)
neutron
c)
proton
22.
Atoms are mostly filled with?
a)
electrons
b)
empty space
c)
protons
23.
If the number of protons changes, does the atom change its identity?
a)
YES!
b)
NO!
24.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
Cannot be determined 
25.
An atoms overall charge is _____.
a)
Positive 
b)
Depends on its mood 
c)
Neutral 
d)
Negative 
26.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
27.
What are the 3 particles that make-up the atom?
a)
Protons, neutrons, and isotopes
b)
Neutrons, isotopes, and electrons
c)
Positives, negatives, and electrons
d)
Protons, neutrons, and electrons
28.

An atom with atomic number 6 would have how many protons

a)

6

b)

12

c)

3

d)

cannot be determined

29.

What does the 1.00794 stand for?

a)

Hydrogen

b)

atomic number

c)

atomic mass

d)

atomic explosion

30.

If an atom has 10 protons, 10 neutrons, and 10 electrons, what is the mass of the atom?

a)

10

b)

20

c)

30

31.

Anything that has mass and takes up space is called

a)

heterogeneous

b)

homogeneous

c)

matter

d)

density

32.

The positive particles of an atom are ___________.

a)

electrons

b)

protons

c)

neutrons

33.

Which number here is the atomic number?

a)

5

b)

10.811

34.

What do protons, electrons and neutrons make?

a)

element

b)

compound

c)

atom

35.

What is the smallest piece of matter that still has properties of that matter?

a)

element

b)

atom

c)

proton

36.

Negatively charged particle

a)

proton

b)

neutron

c)

electron

37.

Neutral charge particle

a)

proton

b)

neutron

c)

electron

38.

Positively charge particle

a)

proton

b)

neutron

c)

electron

39.

Atomic weight

a)

number of protons and neutrons inside the nucleus

b)

number or electrons or protons

c)

number of protons, neutrons and electrons

40.

Atomic number is

a)

Number of protons or electrons

b)

Number of protons and neutrons

c)

Your phone number

Similar Resources on Wayground

NSCAS-Forces & Scientific Method

35 questions

NSCAS-Forces & Scientific Method

quiz

Worksheet

•

8th Grade

Moon Phases

36 questions

Moon Phases

quiz

Worksheet

•

6th - 8th Grade

Grade 8 Review Quiz

35 questions

Grade 8 Review Quiz

quiz

Worksheet

•

8th Grade

Annual Examination Science grade 7

36 questions

Annual Examination Science grade 7

quiz

Worksheet

•

7th Grade

Science Examination 2020 (Mid Term)

38 questions

Science Examination 2020 (Mid Term)

quiz

Worksheet

•

7th Grade

Integrated Science T1, 2022 course work exam

40 questions

Integrated Science T1, 2022 course work exam

quiz

Worksheet

•

7th Grade

Grade 9 Biology: Paper 1

40 questions

Grade 9 Biology: Paper 1

quiz

Worksheet

•

8th - 10th Grade

Force and Motion Review

41 questions

Force and Motion Review

quiz

Worksheet

•

8th Grade