Balancing Chemical Equations Basics
Authored by Kwesi Matthews
Chemistry
10th Grade
NGSS covered
Used 49+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of balancing a chemical equation?
To increase the reaction rate
To ensure that the law of conservation of mass is obeyed
To change the chemical properties
To create new elements
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a balanced chemical equation, what must be equal on both sides?
Number of molecules on each side
Total mass on each side
Number of atoms of each element
Number of protons on each side
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are coefficients in a chemical equation used for?
To make the equation look longer
To add unnecessary information
To confuse students
To balance the number of atoms on both sides of the equation
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the chemical equation: H2 + O2 -> H2O
H2 + O2 -> 2H2O
H2 + O2 -> H2O2
2H2O -> H2 + O2
H2O2 -> H2 + O2
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the chemical equation: Fe + O2 -> Fe2O3
Fe + O3 -> Fe2O3
FeO + O2 -> Fe2O3
Fe + O2 -> Fe2O3
Fe2O2 -> Fe2O3
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the chemical equation: Al + O2 -> Al2O3
Al + O2 -> AlO2
Al + O2 -> AlO3
Al + O2 -> Al3O2
Al + O2 -> 2Al2O3
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balance the chemical equation: N2 + H2 -> NH3
N2 + 4H2 -> 3NH3
N2 + 2H2 -> NH3
N2 + H2 -> NH2
N2 + 3H2 -> 2NH3
Tags
NGSS.MS-PS1-5
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