Empirical and Molecular Formula

Empirical and Molecular Formula

9th - 12th Grade

25 Qs

quiz-placeholder

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Empirical and Molecular Formula

Empirical and Molecular Formula

Assessment

Quiz

Chemistry

9th - 12th Grade

Medium

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

Standards-aligned

Created by

Galen Reid

Used 4+ times

FREE Resource

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the percent by mass of oxygen in MgO?

20%
40%
50%
60%

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the percent by mass of sodium in NaCl?

39%
61%
35%
65%

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the percent composition by mass of oxygen in the compound MgSO4 (gram formula mass = 120 g/mol)?

20%
27%
46%
53%

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A formula with the lowest whole # ratio of elements in a compound is called

Molecular Formula
Chemical Formula
Empirical Formula 
Distance Formula

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A chemical formula that shows the actual # and kinds of atoms present in one molecule of a compound is called_________

ionic formula
covalent formula
empirical formula
molecular formula

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An empirical formula:

is a formula that calculates the coefficients of a compound in a balanced equation.
is the simplest whole-number ratio of moles of elements in the compound.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

C2H2

C2H2

C1H1

CH2

Tags

NGSS.MS-PS1-1

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