Free Printable chemical formula

Worksheets

chemical formula

Total questions: 20

Worksheet time: 10mins

Name

Class

Date

How many carbon atoms (C) are in a CO₂molecule?

More than two atoms stuck together is called a ...................

element

molecule

Chemical property

Physical property

Element or compound?
H₂O

element

compound

Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)

H₃SO₄

HSO₄

H₄S₃O

H₂O

In this image, the symbols to the right of the arrow (in black) are called the_______.

Products

Reactants

Subscripts

Coefficients

Na + MgF₂ --> NaF + Mg
What are the reactants?

Na + MgF₂

NaF + Mg

NaF

NH₃ ---> N₂ + H₂What are the products?

N₂ + H₂

N₂

H₂

NH₃

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

The shape of the coal changes

Oxygen is present

A new substance is produced

Coal is made up of more than one element

What is the chemical formula of Magnesium chloride?

MgCl

MgCl₂

MgC

MgC₂

10.

What is the chemical formula of sodium sulfate?

SSO₄

SoSO₄

NaSO₄

Na₂SO₄

11.

What is the name of this chemical, H₂SO₄?

Hydrogen sulfate

Sulfuric acid

Sulfate

Sulfate hydrogen

12.

What is the formula of Copper (II) oxide?

CUO

CuO

CuO₂

Cu₂O

13.

What is the formula of nitric acid?

H₂SO₄

HNO₃

HCl

hno₃

14.

Which of the following compound is not an acid?

HCl

H₂SO₄

HNO₃

CH₄

15.

What is the name of ion that is present in all acids?

hydrogen ion

hydroxide ion

nitrate ion

sulfate ion

16.

What is the correct name of the compound CaCl₂?

Calcium dichloride

Calcium dichlorine

Calcium chlorine

Calcium chloride

17.

What is the correct name for the compound LiF?

Lithium fluoride

Lithium fluorine

monolithium monofluoride

lithium monofluoride

18.

What is the correct formula for Ammonium phosphate?

NH₄PO₄

NH₄₃PO₄

(NH₄)₃PO₄

NH₄(PO₄)₃

19.

What is the correct name of the compound Mg(NO₃)₂?

Magnesium nitride

Magnesium dinitrate

Monomagnesium dinitrate

Magnesium nitrate

20.

What is the correct name of the compound NO₂?

Nitrogen oxide

Mononitrogen dioxide

Nitrogen dioxide

Dinitrogen monoxide

100 %

chemical formula

Total questions: 20

Worksheet time: 10mins

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