Empirical Formulas Practice

Empirical Formulas Practice

10th Grade

15 Qs

quiz-placeholder

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Empirical Formulas Practice

Empirical Formulas Practice

Assessment

Quiz

Science

10th Grade

Hard

NGSS
MS-PS1-1, HS-PS1-7

Standards-aligned

Created by

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Determine the empirical formula for a compound that is 63.53 % Fe and 36.47 % S by mass.

Fe2S3

FeS

FeS2

Fe3S2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Determine the empirical formula for a compound that is 23.3% Co, 25.3% Mo and 51.4% Cl by mass. What is the empirical formula?

Co Mo Cl4

Co3Mo2Cl11

Co2MoCl3

Co2MoCl9

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A formula that shows the smallest whole-number mole ratio of the elements of a compound, and may or may not be the same as the actual molecular formula.

Empirical Formula

Molecular Formula

Stoichiometry

Chemical Reaction

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the empirical formula of a substance with the molecular formula C2H4?

C2H2

C2H2

C1H1

CH2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which pair has the same empirical formula?

NaCrO4 and Na2Cr2O7

C2H4O2 and C6H12O6

C3H6O3 and C2H6O2

CH4 and C2H6

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Napthalene has the chemical formula C10H8. What would be the empirical formula?

C10H8

C5H4

C20H16

CH2

C4H3

Tags

NGSS.MS-PS1-1

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Glucose has the formula C6H12O6. Maltose has the chemical formula C12H22O11. Do they have the same empirical formula?

Yes

No

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