Balancing Chemistry

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
AgNO3 + Cu → Cu(NO3)2 + Ag
2 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 1 Ag
2 AgNO3 + 1 Cu → 1 Cu(NO3)2 + 2 Ag
1 AgNO3 + 2 Cu → 2 Cu(NO3)2 + 1 Ag
3 AgNO3 + 2 Cu → 3 Cu(NO3)2 + 2 Ag
Tags
NGSS.MS-PS1-2
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Balance this equation: H2 + N2 → NH3
H2 + 4N2 → NH3
H2 + 3N2 → 2NH3
3H2 + N2 → 2NH3
2H2 + 2N2 → 2NH3
Tags
NGSS.MS-PS1-5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Balance this reaction:
____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4
1,3,3,1
1,3,2,1
2,3,3,1
1,1,3,1
Tags
NGSS.MS-PS1-5
4.
DRAG AND DROP QUESTION
1 min • 1 pt
The numbers placed in (a) of formulas to balance equations are called (b) , and they multiply all the atoms in a (c) . Thus, the symbol “2NaHCO₃” indicates (d) units of sodium bicarbonate, which contain 2 Na atoms, 2 H atoms, 2 C atoms, and 6 O atoms
(2 X 3= 6, the coefficient times the subscript for O).
front
coefficients
two
formula
5.
DRAG AND DROP QUESTION
1 min • 4 pts
Balance this equation:
(a) FeCl2 + (b) Cl2 --> (c) FeCl3
2
1
3
4
Tags
NGSS.MS-PS1-5
6.
DROPDOWN QUESTION
1 min • 2 pts
When balancing an equation, you can change the (a) of a substance, but you cannot adjust any (b) because that would change the formula.
coefficient
subscript
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
This unbalanced equation represents a chemical reaction:
Pb(NO3)2 + NaI → NaNO3 + PbI2
What is the coefficient for NaI once the equation is balanced?
1
2
3
4
Tags
NGSS.MS-PS1-5
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