Counting Atoms with Subscripts
Authored by James Dockins
Science
7th Grade
NGSS covered
Used 39+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Oxygen atoms are in the chemical equation?
4
2
8
13
Answer explanation
The subscript for Oxygen is affected by the subscript outside the parentheses. Think of it as the distributive property in math.
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Calcium (Ca) are in the equation?
3
4
2
8
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Phosphorus atoms are in the chemical equation?
3
8
4
2
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Calcium atoms are in the chemical equation?
3
6
2
4
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Hydrogen atoms are in the chemical equation?
4
2
8
6
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many atoms are Sulfur (S) in the chemical equation?
4
2
1
8
Answer explanation
The subscript only affects the atom it is following UNLESS it is an atom inside parentheses with a subscript on the outside.
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many Nitrogen atoms are in the chemical equation?
8
4
1
2
Tags
NGSS.MS-PS1-1
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