Chemical Equations and Conservation Quiz
Authored by Rana Chakrabarty
Chemistry
11th Grade
NGSS covered
Used 1+ times
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20 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which equations are correctly balanced? (Choose exactly two.)
H₂ + O₂ → H₂O
Cu + AgNO₃ → Cu(NO₃)₂ + Ag
2H₂ + O₂ → 2H₂O
2Cu + AgNO₃ → Cu(NO₃)₂ + Ag
Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag
Tags
NGSS.MS-PS1-5
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which equations are correctly balanced? (Choose exactly two.)
2Na + Cl₂ → 2NaCl
Na + Cl₂ → NaCl
Mg + 2HCl → MgCl₂ + H₂
Mg + HCl → MgCl₂ + H₂
Mg + 2HCl → MgCl₂ + 2H₂
Tags
NGSS.MS-PS1-5
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which equations are correctly balanced? (Choose exactly two.)
Fe₂O₃ + 3CO → 2Fe + 3CO₂
K + H₂O → KOH + H₂
2K + H₂O → 2KOH + H₂
2K + 2H₂O → 2KOH + H₂
Fe₂O₃ + CO → Fe + CO₂
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which equations are correctly balanced? (Choose exactly two.)
N₂ + H₂ → NH₃
N₂ + 3H₂ → 2NH₃
CaCO₃ → Ca + CO₂
CaCO₃ → CaO + CO₂
CaCO₃ → CaO + C
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Which equations are correctly balanced? (Choose exactly two.)
2Al + 3Br₂ → 2AlBr₃
Al + Br₂ → AlBr₃
Pb(NO₃)₂ + KI → PbI₂ + KNO₃
Pb(NO₃)₂ + KI → PbI₂ + 2KNO₃
Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
2H₂ + O₂ → 2H₂O. State mathematical evidence that this equation is balanced.
same atoms on both sides
equal amounts on both sides
4 hydrogen atoms on both sides
2 oxygen atoms on both sides
1 oxygen atom on the left and 2 on the right
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Fe₂O₃ + 3CO → 2Fe + 3CO₂. State mathematical evidence that this equation is balanced.
same atoms on both sides
equal amounts on both sides
2 Fe atoms on both sides
3 C and 6 O atoms on both sides
1 Fe atom and 2 O atoms on both sides
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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