Counting Atoms and Molecules
Authored by Lisa Thompson
Science
8th Grade
NGSS covered
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The number written to the lower right of an element that tells you the number of atoms.
Law of conservation of mass
chemical equation
subscript
coefficient
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many Chlorine are in MgCl2?
2
1
3
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The _______ describes the atoms in a compound.
chemical equation
chemical formula
chemical symbol
coefficient
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following would be an example of a chemical formula:
C6H12O6
F= ma
2 H2 + O2 --> 2 H2O
6.02 x 10 23
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is this?
Atom
Molecule
Compound
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many atoms in total are there in nitric acid? HNO3
3
6
5
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the total number of atoms in this chemical formula?
18
12
25
24
Tags
NGSS.MS-PS1-1
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