Balancing Chemical Equations Practice

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
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
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
To balance a chemical equation, it may be necessary to adjust the
formulas of the products
subscripts
coefficients
number of products
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Balance this equation...
HgO --> 2Hg + O2
It is balanced
2HgO --> Hg + O2
2HgO --> 2Hg + O2
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When writing a chemical equation, reactants are on the _____________ while products are on the _________________.
top, bottom
right, left
left, right
bottom, top
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The amount of atoms on each side of a chemical equation are
different
the same
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
In chemical reactions, what does the principle of conservation of mass mean?
Matter is not created or destroyed.
The total mass of the reactants is greater than the total mass of the products.
The total mass of the reactants is less than the total mass of the products.
Matter is not changed.
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
Tags
NGSS.MS-PS1-5
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