Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

8th Grade #1: Atoms & the Periodic Table

Total questions: 40

Worksheet time: 36mins

Name
Class
Date
1.

This symbol represents

a)

proton

b)

positive charge

c)

electron

d)

negative charge

e)

neutron

2.

This symbol represents

a)

proton

b)

positive charge

c)

electron

d)

negative charge

e)

neutral charge

3.

This symbol represents

a)

neutron

b)

neutral charge

c)

electron

d)

proton

e)

positive charge

4.

Why was it difficult for scientists to figure out that there were neutrons present in atoms?

a)

neutrons have no charge, so they aren't influenced by other charged particles

b)

neutrons and protons are mixed together in the nucleus, so it was hard to tell them apart

c)

protons, neutrons, and electrons all act similarly, making it hard to tell them apart

d)

neutrons are in the cloud surrounding the nucleus, so they are often too far away to study

5.

How is the periodic table and a calendar similar?

a)

They both have rows and columns.

b)

They both have repeating events.

c)

They have no predictable patterns,

d)

They have the same shape.

6.

How many valence electrons does Hydrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

7.

How many valence electrons does Helium Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

8.

How many valence electrons does Nitrogen Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

9.

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

10.

How many valence electrons does Argon Have?

a)

4 Valence electron

b)

5 Valence electron

c)

6 Valence electron

d)

7 Valence electron

e)

8 Valence electron

11.
Examples of elements that are gases and not reactive are called ___________.
a)
metals
b)
non-metals
c)
metalloids
d)
noble gases
12.
________ are good conductors of electricity; they are often shiny solids at room temperature.
a)
Non-metals
b)
Metalloids
c)
Metals
d)
Noble gases
13.

 

The family in the periodic table that contains the most reactive metals is the_______

a)

alkali metal

b)

alkali earth metals

c)

transition metals

d)

group 1 metal

14.

Metals like copper and iron are good for wires because they have high conductivity. They are classified as

a)

transition metals

b)

alkali metals

c)

alkali earth metals

d)

group 1 metals

15.

Alkali metals like sodium would be bad for use in wires because

a)

it is too reactive (KABOOM)

b)

It is unreactive (BORING)

c)

It is malleable (BENDY)

d)

It is ductile (STRETCHY)

16.

Which elements are colored red?

a)

nonmetals

b)

metals

c)

metalloids

17.

Which elements are to the right of the zig zag?

a)

metals

b)

nonmetals

c)

metalloids

d)

metalloids and nonmetals

18.

Neon is colorless, a poor conductor of heat and is not able to be stretched. How would it be classified?

a)

Nonmetal

b)

Metalloid

c)

Metal

d)

None of the above

19.

Manganese is shiny, conducts heat and electricity, and can be hammered into thin sheets. What is is?

a)

Nonmetal

b)

Metal

c)

Metalloid

d)

None of the above

20.

Silicon has a dull, metallic luster, conducts heat well, and is brittle. What is it?

a)

Nonmetal

b)

Metal

c)

Metalloid

d)

None of the above

21.
a)

Metal

b)

Nonmetal

c)

Metalloid

22.
a)

Metal

b)

Nonmetal

c)

Metalloid

23.
a)

Metal

b)

Nonmetal

c)

Metalloid

24.
a)

Metal

b)

Nonmetal

c)

Metalloid

25.
a)

Metal

b)

Nonmetal

c)

Metalloid

26.
Which element is a metalloid?
a)
Titanium
b)
Selenium
c)
Potassium
d)
Polonium
27.
A student is given a sample of an unknown substance. He is asked to determine if it is classified as a metal, a metalloid, or a nonmetal. He discovered that the unknown element conducted some heat and electricity, had a shiny luster, and broke easily. This element is most likely a 
a)
metal
b)
nonmetal
c)
metalloid
d)
cannot be determined
28.

Which elements are to the LEFT of the zigzag?

a)

metals

b)

nonmetals

c)

metalloids

29.

Acids have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

30.

Bases have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

31.

Neutral solutions have a pH of _______________.

a)

below 7

b)

above 7

c)

exactly 7

32.

Which one of the following is NOT a property of basic solutions?

a)

Feels soapy/slippery

b)

Tastes sour

c)

Conducts electricity

d)

Turns red litmus paper blue

33.

Which one of the following is NOT a property of acids.

a)

Tastes sour

b)

Corrodes metals

c)

Conduct electricity

d)

Turns red litmus paper blue

34.

Baking soda is an awesome ingredient in cake because

a)

it causes an acid and a base to react

b)

causes carbon dioxide gas to form

c)

causes hydrogen gas to form

d)

it causes and acid and a metal to react

35.

How many neutrons would oxygen-16 have?

a)

8

b)

16

c)

6

d)

24

36.

How many neutrons would oxygen-14 have?

a)

8

b)

16

c)

6

d)

24

37.

how Rutherford discovered that the atom consists of a small, massive, positively charged nucleus

a)

reading quantum mechanics books

b)

by mixing substances

c)

thanks to the The gold-foil experiment

d)

exposing it to the heat

38.

What did Ernest Rutherford’s gold foil experiment demonstrate about atoms?

a)

Their positive charge is located in a small region that is called the nucleus.

b)

Their negative charge is located in small particles that are called electrons.

c)

Their nucleus makes up the majority of the volume of the atom.

d)

Their electrons are floating in a sea of positive charges.

39.

Which statement best summarizes the importance of Ernest Rutherford’s gold foil experiment?

a)

It proved that all of John Dalton's postulates were true.

b)

It verified J.J. Thomson's work on the atomic structure.

c)

It showed that an electron circles a nucleus in a fixed-energy orbit.

d)

It showed that a nucleus occupies a small part of the whole atom.

40.

How could you tell what an element was?

a)

Counting the number of electrons surrounding the nucleus

b)

Counting the number of protons inside the nucleus

c)

Counting the number of neutrons inside the nucleus

d)

Adding the number of protons and electrons

e)

Adding the number of protons and neutrons

Similar Resources on Wayground

Changes: Physical

42 questions

Changes: Physical

quiz

Worksheet

•

8th Grade

elements, compounds, mixtures, bonding

40 questions

elements, compounds, mixtures, bonding

quiz

Worksheet

•

7th Grade

Chemical Equations

40 questions

Chemical Equations

quiz

Worksheet

•

8th Grade

electricidad y magnetismo

39 questions

electricidad y magnetismo

quiz

Worksheet

•

5th - 6th Grade

Bundle 3 Exam Review

45 questions

Bundle 3 Exam Review

quiz

Worksheet

•

6th Grade

Mineral ID Practice

45 questions

Mineral ID Practice

quiz

Worksheet

•

8th - 10th Grade

Mirrors and Lenses

38 questions

Mirrors and Lenses

quiz

Worksheet

•

6th Grade

Density and Solar System Review

35 questions

Density and Solar System Review

quiz

Worksheet

•

6th Grade