
Understanding Mass and Molar Mass in Chemistry
Interactive Video
•
Chemistry, Science
•
9th - 12th Grade
•
Hard

Sophia Harris
FREE Resource
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9 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does mass measure in chemistry?
The density of a substance
The temperature of a substance
The amount of matter in a substance
The volume of a substance
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why doesn't the overall mass of a sample provide useful information about the number of atoms?
Because atoms of different elements can have different masses
Because mass is not related to the number of atoms
Because atoms of different elements have the same mass
Because the mass of atoms is negligible
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is molar mass?
The mass of one mole of atoms of an element
The density of one mole of atoms of an element
The volume of one mole of atoms of an element
The mass of one atom of an element
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is molar mass related to relative atomic mass?
Relative atomic mass is always double the molar mass
Molar mass is always double the relative atomic mass
They are completely unrelated
They are the same value but have different units
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the units of molar mass?
Grams per mole
Moles per gram
Moles
Grams
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the molar mass of hydrogen?
10 grams per mole
0.5 grams per mole
1 gram per mole
2 grams per mole
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't we directly measure the number of atoms in a sample?
Because atoms are always moving
Because atoms are invisible
Because atoms are too large to count
Because atoms are too small to count
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate moles from mass and molar mass?
Moles = Mass x Molar Mass
Moles = Molar Mass / Mass
Moles = Mass + Molar Mass
Moles = Mass / Molar Mass
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the molar mass of a compound is 50 grams per mole and the sample mass is 100 grams, how many moles are in the sample?
2 moles
1 mole
5 moles
0.5 moles
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