Avogadro's Number
Authored by Ms. Wasilewski
Science
7th - 9th Grade
NGSS covered
Used 46+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molar mass of Br?
79.9 g / mol
79.9 mol / g
35 g / mol
35 mol / g
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molar mass of Carbon?
6 g / mol
6 mol / g
12.0 g / mol
12.0 mol / g
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the molar mass of N2O4?
6 g / mol
30 g / mol
92 g / mol
100 g / mol
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the molar mass of Al(OH)3?
7 g / mol
44 g / mol
76 g / mol
78 g / mol
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Physical and chemical changes involve _____ .
Energy
Bubbles
Change of shape
New substances
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A chemical reaction is the process of breaking molecular bonds and reforming them into a new _____.
atom
element
substance
mixture
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The law of conservation of mass states that the total mass of products must _____.
never equal the total mass of the reactants.
equal the total mass of the reactants.
destroy atoms of the reactants.
create new atoms from the reactants.
Tags
NGSS.HS-PS1-7
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