
Counting Atoms in Chemical Equations

Interactive Video
•
Science
•
6th - 8th Grade
•
Medium
Standards-aligned

Lucas Foster
Used 10+ times
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a subscript in a chemical formula indicate?
Number of molecules
Number of atoms of the element it follows
Total number of elements
Number of chemical bonds
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does a coefficient play in a chemical formula?
Represents the number of electrons
Multiplies with subscripts to give total atoms
Shows the number of bonds
Indicates the number of atoms
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of a subscript that follows an element symbol in a chemical formula?
Represents the number of atoms of that element
Shows the number of molecules
None of the above
Indicates charge of the ion
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the formula for sodium acetate decahydrate, how many sodium atoms are present?
Four
Three
Two
One
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many carbon atoms are in sodium acetate decahydrate?
Two
One
Four
Three
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the total number of atoms in calcium phosphate as described in the video?
12
15
13
10
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many oxygen atoms are in the chemical formula of calcium phosphate?
Six
Four
Eight
Ten
Tags
NGSS.MS-PS1-1
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