4
lesson pretestMultiple Choice

Pretest

Question 4 • Physical Science

Which clue can be used to identify a chemical reaction as a replacement reaction?

Answer
A
The reaction has a single reactant that changes into two or more products.
B
The reaction involves a single product forming from two or more reactants.
C
The reaction has two reactants with ions that seem to switch places.
D
The reaction involves oxygen reacting with a hydrocarbon and giving off heat.
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Which clue can be used to identify a chemical…