Chemical Reactions Study Guide (part 3)

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

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

What type of chemical reaction is this one?
CUO + CO2 --> CuCO3

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

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

• Decomposition
• Combustion
• Synthesis
• Single Replacement 

What is a reactant?

• The chemical substances that begin the reaction.
• What comes from the reaction.

What is a yield?

• The arrow in an equation that represents the chemical reaction.
• The beginning substances.

What is a coefficient?

• The small number on the right of the chemical symbol.
• The large number to the left of a formula.

What is a product?

• What's left of the chemical reaction.
• The beginning formulas.

Decomposition occurs when...

• Two formulas combine.
• A formula breaks apart.
• An atom is replaced during a reaction.

A synthesis occurs when...

• Two formulas combine.
• A formula breaks apart.
• An atom is replaced during a reaction.

Why must chemical equations be balanced?

• So that the equation doesn't explode

• The reaction won't happen until it is balanced

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

• Based on the Law of Conservation of Energy, energy cannot be created or destroyed.e