Chemical Reactions Introduction Question Preview (ID: 45891)


Some Basic Questions About The Five Main Types Of Chemical Reactions.

In a combustion reaction, ________________ is required in order for the reaction to take place.
a) oxygen
b) hydrogen
c) water
d) carbon dioxide

Ions that do not participate in a chemical reaction are _____________ ions.
a) negative
b) positive
c) spectator
d) important

A + B -- AB is what type of reaction?
a) single replacement
b) double replacement
c) synthesis
d) decomposition

The starting substances in a reaction are known as:
a) products
b) reactants
c) chemicals
d) substances

The symbol (aq) means
a) dissolved in oil
b) dissolved in alcohol
c) no specific state of matter
d) dissolved in water

The total number of ___________ must be equal in a balanced reaction.
a) molecules
b) each type of atom
c) each type of molecule
d) nothing has to be equal

AB -- A + B is what type of reaction?
a) single replacement
b) double replacement
c) synthesis
d) decomposition

To balance a chemical equation you change ____________.
a) chemicals
b) subscripts
c) coefficients
d) phase of matter

The ending substances in a reaction are known as:
a) products
b) reactants
c) chemicals
d) materials

A + BC -- B + AC is what type of reaction?
a) single replacement
b) double replacement
c) synthesis
d) decomposition

AB + CD -- AD + CB is what type of reaction?
a) single replacement
b) double replacement
c) synthesis
d) decomposition

Complete combustion reactions always have products carbon dioxide and ______________.
a) carbon monoxide
b) glucose
c) water
d) ethanol

Full chemical reactions always include the _____________ of matter.
a) changes
b) phases
c) phase changes
d) laws

You can change a subscript to balance a chemical reaction.
a) Always
b) sometimes
c) not often
d) never

A balanced chemical reaction has the same number of _____________ on each side.
a) atoms
b) molecules
c) atoms of each element
d) molecules of each compound

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