Free Printable Molar Mass

Worksheets

Molar Mass

Total questions: 38

Worksheet time: 45mins

Name

Class

Date

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

Atomic mass

Atomic number

Oxidation number

Valence electrons

The mass of one mole of substance is called...

molecular mass

mole constant

molar mass

atomic weight

What is the molar mass of sodium?

45.98

What is the molar mass of fluorine gas?
(beware!)

18.998 g/mol

38 g/mol

9 g/mol

18 g/mol

What is the mass of one mole of aluminum?

27 g

13 g

54 g

14 g

What is the molar mass of table salt (NaCl)?

116.886 g/mol

35.453 g/mol

22.990 g/mol

58.443 g/mol

What is the molar mass of CO₂?

How many particles are in a mole?

602

602 million

602 moles

6.02 x 10²³

What is the mass of one mole of aluminum?

27 g

13 g

54 g

14 g

10.

Calculate the molar mass of Ba(C₂H₃O₂)₂

255.3 g/mol

237.3 g/mol

228.3 g/mol

196.3 g/mol

11.

Calculate the molar mass of NH₄NO₂

50 g/mol

60 g/mol

64 g/mol

78 g/mol

12.

What is the mass of one mole of Helium?

4 g

2 g

8 g

There is no way to know

13.

Molar mass is in units of ________.

grams

grams/mole

mole

moles/gram

14.

What is the molar mass of AuCl₃?

96 g

130 g

232.5 g

303.3 g

15.

Which would have more atoms?

1 mole of Li

1 mole of Au

1 mole of Si

None, all are equal

16.

What is the Molar Mass of Potassium Sulfide?..... :-) You get to figure out the formula.

110.262 g/mol

71.164 g/mol

174.258 g/mol

158.259 g/mol

17.

Pb is the chemical symbol for what element?

Platinum

Phosphorus

Lead

Bronze

18.

What is the atomic MASS of Potassium (K)

31.9

209

19.

What is the atomic number of Cl

35.5

20.

What is the definition for Avogadro's number?

number of grams per one mole of a substance

whole number ratio that is a multiple of a chemical formula

simplest, whole number ratio of a chemical formula

6.02 x 10²³ particles per one mole of a substance

21.

What is the molar mass of fluorine gas, F₂?

18.998 g/mol

38 g/mol

9 g/mol

18 g/mol

22.

What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?

62.435g

116.399g

133.341g

97.888g

23.

What id the molar mass of UF₆?

101 g/mol

238 g/mol

257 g/mol

352 g/mol

24.

Calculate the molar mass of Ba(C₂H₃O₂)₂

255.3 g/mol

237.3 g/mol

228.3 g/mol

196.3 g/mol

25.

What are the 3 particles that make-up the atom?

protons, neutrons, and isotopes

neutrons, isotopes, and electrons

positives, negatives, and electrons

protons, neutrons, and electrons

26.

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

27.

Most of the mass in an atom is concentrated in the...

electrons

nucleus

protons

empty space

28.

"C" is the element symbol for which element?

calcium

carbon

chlorine

cadmium

29.

True or False? Neutrons have a negative charge

True

False

30.

If I gain electrons I become

Positive because I've added to my atom

negative because I've added electrons

same because i'm balanced

equal because now I have electrons

31.

The proper formula for magnesium hydroxide:

MgOH

Mg₂OH

Mg(OH)₂

Mg₂OH₂

32.

An ion with a positive charge is a/an

anion

cation

33.

An isotope of an element has the same number of _________, but a different number of _________.

Protons, electrons

Protons, neutrons

Electrons, neutrons

34.

How many elements are in C₆H₁₂O₆?

35.

Which of the following is a compound?

O₂

CO₂

36.

A molecule is made up of

one or more mixtures.

one or more compounds.

one or more atoms.

one or more solutions.

37.

Which scientific law states that an atom cannot be created or destroyed:

Law of Conservation of Matter

Law of Gravity

Law of Conservation of Mass

Law of Motion

38.

Which best describes a chemical reaction?

Products --> Reactants

Reactants --> Products

100 %

Molar Mass

Total questions: 38

Worksheet time: 45mins

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