Balancing & Identifying Chemical Reactions

__Na + __Cl₂ --> __NaCl

• 1,1,2
• 2,1,2
• 2,1,1
• already balanced

Balancing this reaction: ____ CH₄ + ____ O₂ ---> ____ CO₂ + ____ H₂O

• 2,1,3,1
• 1,2,1,2
• 1,2,2,1
• 2,1,1,2

Balance this reaction: ____ GaF₃ + ____ Cs ---> ____ CsF + ____ Ga

• 1,1,3,1
• 1,2,3,1
• 2,3,3,1
• 1,3,3,1

Balance this reaction: ____ BaS + ____ PtF₂ ---> ____ BaF₂ + ____ PtS

• 1,1,1,1
• 1,2,1,1
• 1,1,1,2
• 2,1,1,1

Is a change in matter that produces one or more new substances

• precipitate

• endothermic reaction

• chemical reaction

• activation energy

A reaction that absorbs energy in the form of heat

• catalyst

• endothermic reaction

• enzyme

• precipitate

A reaction that releases energy in the form of heat

• activation energy

• concentration

• exothermic reaction

• catalyst

The total mass of the reactants must equal the total mass of products. Matter is never created or destroyed

• Conservation of Mass

• Pascal's Principle

• catalyst

• inhibitor

Which type of chemical reaction is this:

Mg + O₂ ------- MgO

• synthesis

• decomposition

• combustion

• single replacement

Which type of chemical reaction is this:

HgO ------- Hg + O

• synthesis

• double replacement

• combustion

• decomposition