Types of Reactions and Balancing

Front

What is a synthesis reaction?

Back

A synthesis reaction is a type of chemical reaction where two or more simple substances combine to form a more complex product. Example: Ca + O -> CaO.

Front

Identify the type of reaction: 2H2 + O2 -> 2H2O

Back

Synthesis.

Front

What is a decomposition reaction?

Back

A decomposition reaction is a type of chemical reaction where a single compound breaks down into two or more simpler products. Example: 2H2O -> 2H2 + O2.

Front

Identify the type of reaction: 2NaCl -> 2Na + Cl2

Back

Decomposition.

Front

What is a single replacement reaction?

Back

A single replacement reaction is a type of chemical reaction where one element replaces another in a compound. Example: Zn + 2HCl -> ZnCl2 + H2.

Front

Identify the type of reaction: Cl2 + 2KI -> I2 + 2KCl

Back

Single Replacement.

Front

What is a double replacement reaction?

Back

A double replacement reaction is a type of chemical reaction where two compounds exchange ions or bonds to form two new compounds. Example: AgNO3 + NaCl -> AgCl + NaNO3.

Front

Identify the type of reaction: Pb(NO3)2 + 2KI -> PbI2 + 2KNO3

Back

Double Replacement.

Front

What does it mean for a chemical equation to be balanced?

Back

A balanced chemical equation has the same number of each type of atom on both sides of the equation, following the law of conservation of mass.

Front

Is the equation 2H2 + O2 -> 2H2O balanced?

Back

Yes.