Science 6 Chapter 4 Test Set 2 Question Preview (ID: 33621)


Chemical Reactions. TEACHERS: click here for quick copy question ID numbers.

A precipitate is a _______________ that forms during a chemical reaction.
a) solid
b) liquid
c) gas
d) plasma

In a chemical equation, the substances written on the right side of the arrow are called
a) reactants
b) products
c) molecules
d) compounds

The _______________ is the minimum amount of energy to start a chemical reaction.
a) chemical formula
b) catalyst
c) activation energy
d) coefficient

The ______________ is the amount of one material present in a given volume of another material.
a) concentration
b) catalyst
c) inhibitor
d) enzyme

A reaction in which one or more elements change places in a compound is called
a) synthesis
b) replacement
c) decomposition
d) precipitate

What kinds of changes occur when existing bonds break and new bonds form?
a) physical
b) chemical
c) coefficient
d) subscript

The amount of matter in a chemical reaction
a) changes
b) remains the same
c) is created
d) is destroyed

What is the process of making a more complex compound from simpler compounds called?
a) decomposition
b) replacement
c) synthesis
d) precipitate

The rate of a chemical reaction is ________________ temperature.
a) dependent on
b) independent of
c) unaffected by
d) created with

A chemical reaction may be detected by observing changes in what?
a) properties of matter
b) volume
c) number of atoms
d) mass

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