Balancing and Classifying Chemical Reactions

Front

When the equation H₂ + O₂ → H₂O is balanced, what is the correct coefficient for O₂?

Back

1

Front

What are the compounds before the arrow called in a chemical equation, and what are the compounds after the arrow called?

Back

reactants; products

Front

What type of chemical reaction is this one?
Al(OH)₃ → Al₂O₃  + H₂O

Back

Decomposition

Front

What type of chemical reaction is this one?
CuO + CO₂ → CuCO₃

Back

Synthesis

Front

What type of chemical reaction is this one?
Ca + MgCl₂ --> CaCl₂ + Mg

Back

Single Replacement

Front

Balance the equation: _Bi + _O₂ > _Bi₂O₃

Back

4,3,2

Front

Why must chemical equations be balanced?

Back

Based on the Law of Conservation of Matter, matter cannot be created or destroyed.

Front

4Fe + ____O₂ → 2Fe₂O₃

Back

3

Front

What are the reactants in the chemical equation pictured?

Back

CH₄ and O₂

Front

What is the small number written after a chemical symbol called?

Back

Subscript