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