
Percent Composition and Chemical Mass
Interactive Video
•
Chemistry, Science
•
7th - 10th Grade
•
Hard

Mia Campbell
FREE Resource
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does percent composition represent in a substance?
The mass of each element in a substance
The volume of each element in a substance
The number of atoms of each element in a substance
The density of each element in a substance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the mass of water (H2O) in grams per mole?
20 g per mole
16 g per mole
18 g per mole
22 g per mole
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams per mole is the mass of hydrogen?
4 g per mole
3 g per mole
2 g per mole
1 g per mole
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What percentage of water's mass is hydrogen?
10%
12%
11%
13%
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the general formula for calculating the percent mass of an element in a compound?
Mass of element * Total mass of compound / 100
Total mass of compound / Mass of element * 100
Mass of element / Total mass of compound * 100
Total mass of compound * Mass of element / 100
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a percentage represent in general?
A ratio of two whole numbers
A fraction or part of a whole
A whole number
A decimal number
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the experimental data example, what is the total mass of the substance?
55 g
45 g
40 g
50 g
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