
Coefficient and Subscripts Quiz
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
Robert Ayres
Used 1+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5NaC3HO2
How many Hydrogen atoms are in the formula above?
10
5
30
1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5NaC3HO2
How many elements are in the formula above?
10
5
30
1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do subscripts represent in a chemical formula?
The temperature at which a molecule is formed.
The mass of each element in a molecule.
The charge of each element in a molecule.
The number of atoms of each element in a molecule.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the chemical formula H2O, what does the subscript '2' represent?
number of oxygen atoms
number of water molecules
number of carbon atoms
number of hydrogen atoms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the coefficient of O2 in the balanced equation: 2H2 + O2 → 2H2O?
1
4
3
2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the coefficient of CO2 in the balanced equation: C6H12O6 + 6O2 → 6CO2 + 6H2O?
6
1
2
3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many elements are on the left hand side (reactant side) of the arrow? C6H12O6 + 6O2 → 6CO2 + 6H2O?
6
4
36
3
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