
Equations
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
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2, 6, 3, 2
it is already balanced
4, 12, 3, 4
2, 1, 4, 5
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following reactions is balanced?
2CH4 + O2 -> CO2 + H2O
CH4 + 2O2 -> CO2 + H2O
CH4 + 2O2 -> CO2 + 2H2O
None of the chemical equations are balanced.
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H2
1
2
3
4
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The substances listed on the right side of a chemical equation are the
Yields
Reactants
Products
Precipitates
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The substances listed on the left side of a chemical equation are the
Products
Coefficients
Precipitates
Reactants
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
1
2
3
0
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which number should go in the blank?
2 Na+ _ Cl2 -> 2 NaCl
1
2
3
0
Tags
NGSS.MS-PS1-5
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