Chemical Reactions Unit Exam
Authored by Charles Martinez
Chemistry
6th - 8th Grade
NGSS covered
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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A substance that enters into a chemical reaction is called a
mole.
product.
coefficient.
reactant.
Tags
NGSS.MS-PS1-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a reaction in which hydrogen reacts with oxygen to produce water, which substances are the reactants?
hydrogen only
oxygen only
both hydrogen and oxygen
water
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not an example of a chemical change?
rusting iron
an apple ripening
cutting paper
a piece of wood burning
Tags
NGSS.MS-PS1-5
NGSS.MS-PS1-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a chemical reaction, what is the relationship between the total mass of the reactants and the total mass of the products?
They must be equal.
The mass of the products must be greater.
The mass of the reactants must be greater.
There is no general relationship between the two.
Tags
NGSS.MS-PS1-5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the general form for a single-replacement reaction?
AX + BY --> AY + BX
AB --> A + B
A + B --> AB
A + BX --> AX + B
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the general form for a double-replacement reaction?
AX + BY --> AY + BX
AB --> A + B
A + B --> AB
A + BX --> AX + B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What kind of reaction is represented by the equation C2Cl4 + Cl2 --> C2Cl6?
synthesis
double replacement
single replacement
combustion
Tags
NGSS.MS-PS1-2
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