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Science 6 Chapter 4 Test Set 2
Test Description: Chemical Reactions
Instructions: Answer all questions to get your test result.
1) A precipitate is a _______________ that forms during a chemical reaction.
A
plasma
B
liquid
C
solid
D
gas
2) In a chemical equation, the substances written on the right side of the arrow are called
A
products
B
molecules
C
compounds
D
reactants
3) The _______________ is the minimum amount of energy to start a chemical reaction.
A
activation energy
B
catalyst
C
coefficient
D
chemical formula
4) The ______________ is the amount of one material present in a given volume of another material.
A
inhibitor
B
concentration
C
catalyst
D
enzyme
5) A reaction in which one or more elements change places in a compound is called
A
precipitate
B
synthesis
C
replacement
D
decomposition
6) What kinds of changes occur when existing bonds break and new bonds form?
A
subscript
B
physical
C
chemical
D
coefficient
7) The amount of matter in a chemical reaction
A
remains the same
B
is created
C
changes
D
is destroyed
8) What is the process of making a more complex compound from simpler compounds called?
A
decomposition
B
synthesis
C
replacement
D
precipitate
9) The rate of a chemical reaction is ________________ temperature.
A
created with
B
independent of
C
dependent on
D
unaffected by
10) A chemical reaction may be detected by observing changes in what?
A
volume
B
mass
C
properties of matter
D
number of atoms
*select an answer for all questions
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