Free Printable Moles

Worksheets

Moles

Total questions: 23

Worksheet time: 52mins

Name

Class

Date

In chemistry, a "mole" is:

The mass of an atom

a large number used to count particles

based on the volume of a substance

How many potatoes are in one dozen potatoes?

6.02 x 10²³

How many atoms of iodine are in a mole of iodine?

63.55g

126.9

6.02 x 10²³

The number 6.02 x 10²³ is called...

Obama's number

Bohr's number

Trump's number

Avogadro's number

What is the molar mass of NaCl?

58.45g/mol

28g/mol

12g/mol

6.02 x 10²³

What is the molar mass of C₂H₄O₂? Round to a whole number

40g/mol

50g/mol

60g/mol

70g/mol

What would be the mass of 1.5mol H₂O? Round to a whole number.

20g

27g

32g

40g

If I need 20 moles of sodium chloride, how much should I weigh out?

0.549 g

112 g

1149 g

5077 g

Which has more molecules?

1 mole H₂O

1 mole Al(OH)₃

1 mole NaCl

There are all the same

10.

What is the molar mass of Cl₂?

17 g/mol

35.5 g/mol

70.9 g/mol

89 g/mol

11.

What id the molar mass of UF₆? Round to whole numbers.

101 g/mol

238 g/mol

257 g/mol

352 g/mol

12.

Calculate the molar mass of KOH. Round to whole numbers.

28 g/mol

56 g/mol

84 g/mol

112 g/mol

13.

Calculate the molar mass of CO₂. Round to whole numbers.

14 g/mol

28 g/mol

36 g/mol

44 g/mol

14.

What is the molar mass of the diatomic element nitrogen? Round to whole numbers.

7 g/mol

14 g/mol

28 g/mol

15.

Calculate the molar mass of water (H₂O). Round to whole numbers.

10 g/mol

17 g/mol

18 g/mol

34 g/mol

16.

Which would have more atoms?

1 mole of Li

1 mole of Au

1 mole of Si

None, all are equal

17.

The molar mass of an element is equal to its...

Atomic mass

Atomic number

Oxidation number

Valence electrons

18.

Molar mass is in units of ________.

grams

grams/mol

mole

moles/gram

19.

How many moles are in 19.82 g Mg?

1.226mol Mg

481.7mol Mg

1.000mol Mg

0.8156 mol Mg

20.

How many moles are in 1459 grams of Na?

63.46 moles

60.36 moles

10 moles

1 mole

21.

How many moles are in 100 g of carbon dioxide, CO₂?

2.27 mol

2.36 mol

3.51 mol

1.49 mol

22.

Which of these GHS symbols warns for radioactive substances?

23.

Which of these GHS-symbols warns for corrosive substances?

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Moles

Total questions: 23

Worksheet time: 52mins

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