Free Printable Atoms & Elements

1.

How many elements are in this chemical formula?

NaOH

a)

1

b)

2

c)

3

d)

4

2.

How many elements are in this formula?

HNO₃

a)

1

b)

2

c)

3

d)

4

3.

How many elements are in this formula?

Li₂O

a)

1

b)

2

c)

3

d)

4

4.

What is the chemical symbol for Hydrogen

a)

H

b)

He

c)

Hy

d)

Hg

5.

What element has the symbol Al

a)

Argon

b)

Aluminium

c)

Silver

d)

Gold

6.

What is the symbol for Carbon

a)

Ca

b)

C

c)

Co

d)

Cr

7.

What is the symbol for Potassium

a)

P

b)

Po

c)

K

d)

Pt

8.

What is the symbol for Iron?

a)

Ir

b)

In

c)

Fe

d)

FE

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.

Particles in an atom that are neutral and have no charge are

a)

negatrons

b)

electrons

c)

neutrons

d)

protons

11.

The positive parts of an atom are

a)

electrons

b)

positrons

c)

neutrons

d)

protons

12.

These particles orbit around the nucleus of an atom. What are they called?

a)

electrons

b)

protons

c)

neutrons

d)

photons

13.

An atom with atomic number 6 would have how many protons

a)

6

b)

12

c)

3

d)

cannot be determined

14.

What is the atomic number for an element with three protons?

a)

2

b)

1

c)

3

d)

6

15.

What is the number of protons that the element in this image contain?

a)

14

b)

7

c)

15

d)

18

16.

What is a compound?

a)

A molecule that is formed from two different elements/atoms.

b)

A molecule that is formed from two or more of the same element/atom.

c)

A tiny atom that makes up an atom.

d)

The center of an atom that is formed by neutrons. protons, and electrons.

17.

If a compound has 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms, its chemical formula must be...

a)

12C22H11O

b)

$C_{12}H_{22}O_{11}$

c)

$C_{11}H_{22}O_{12}$

d)

$2C_{11}H_{22}O_{12}$

Atoms & Elements

Total questions: 17

Worksheet time: 10mins

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