Chemical Reactions
Authored by Sarah Tanner
Science
10th - 11th Grade
NGSS covered
Used 57+ times
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33 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which equation below demonstrates the law of conservation of mass?
Mg + S --> MgS2
C + O2 --> C2O
4Cu + O2 --> 2Cu2O
H2SO4 + Zn --> 4ZnSO + H2
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
What type of reaction is displayed below?
2KClO3 --> 2KCl + 3O2
synthesis
decomposition
single replacement
double replacement
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Chemical equations must be balanced because
the mass of the reactants is always greater than the mass of the products
the mass of the products is always greater than the mass of the reactants
mass can neither be created nor destroyed
mass is determined by a chemical reaction
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which equation correctly illustrates conservation of mass?
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Look at the following chemical equation
4Al + 3O2 --> 2Al2O3
What is true about this chemical equation?
The products contain the same numbers and types of atoms as the reactants.
The products contain the same arrangement of atoms as found in the reactants.
The products contain the same numbers but not the same types of atoms as the reactants.
The products contain the same types but not the same numbers of atoms as the reactants.
Tags
NGSS.MS-PS1-5
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Look at the following equation
__Au2O3 --> __Au + __ O2
In order to follow the law of conservation of mass, this equation must have which set of coefficients, in order from left to right?
2, 4, 3
1, 2, 1
2, 1, 3
1, 1, 3
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The balanced chemical equation below shows the reaction between nitrogen (N2) and hydrogen (H2) to form ammonia (NH3)
N2 + 3H2 --> 2NH3
If 15.0 grams of nitrogen is reacted to produce 40.0 grams of ammonia, how many grams of hydrogen were used?
15 g
25 g
10 g
55 g
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
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