Unit 4: Chemical Reactions Review
Authored by Jessica Richardson
Chemistry, Science
10th Grade
NGSS covered
Used 25+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of reaction is this?
2 H2 + O2 → 2 H2O
Synthesis
Decomposition
Single Replacement
Double Replacement
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write and balance the skeleton equation for the following word equation (Remember: Diatomics come in pairs of two!):
hydrogen gas + oxygen gas → water
2 H + O → H2O
4 H + O2 → 2 H2O
2 H2 + O2 → 2 H2O
4 H + 2 O → 2 H2O
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of reaction is this?
2 H2O → 2 H2 + O2
Synthesis
Decomposition
Single Replacement
Double Replacement
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write and balance the skeleton equation for the following (Remember: Diatomics come in pairs of two!):
Iron (III) oxide + hydrogen gas → water + iron
Fe2O3 + 6 H → 3 H2O + 2 Fe
FeO + H2 → H2O + Fe
Fe2O3 + 3 H → 3 H2O + 2 Fe
Fe2O3 + 3H2 → 3 H2O + 2 Fe
Tags
NGSS.HS-PS1-7
NGSS.HS-PS1-2
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write and balance the skeleton equation for the following (Remember: Diatomics come in pairs of two!):
Sodium + water → sodium hydroxide + hydrogen
Na + H2O → NaOH + H
2 Na + 2 H2O → 2 NaOH + H2
Na + 2 H2O → 3 NaOH + H2
2 Na + 4 H2O → 2 NaOH + 2 H2
Tags
NGSS.HS-PS1-7
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What type of reaction is this?
3 FeCl2 + Al2O3 → 2 AlCl3 + 3 FeO
Synthesis
Decomposition
Single Replacement
Double Replacement
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Write and balance the skeleton equation for the following (Remember: Diatomics come in pairs of two!):
Calcium carbide + Oxygen → Calcium + Carbon dioxide
Ca2C + 2 O → 2 Ca + CO2
2 Ca2C + O → 3 Ca + CO2
Ca2C + O2 → 2 Ca + CO2
4 Ca2C + O → 3 Ca + CO2
Tags
NGSS.HS-PS1-7
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