Types of Chemical Reactions

Part II

There are 5 types of chemical reactions to know!

1. Single displacement

2. Double displacement

3. Synthesis

4. Decomposition

5. Combustion

+ +—>

—>

—>+ +

1. Single Displacement

A + BC —> AB + C

Kaden Nathan Aislyn Poor Nathan

• happens when a single element is replaced by a different element from an ionic compound

A + BC —> AB + C

Example: Cu + AgCl —> CuCl + Ag

1. Single Displacement

1. Double Displacement

• occurs when ionic compounds switch their metals

AB + CD —> CB + AD

Example: AgNO3 + NaCl —> NaNO3 + AgCl

2. Double Displacement

Single or Double?Zn + HCl —> H2 + ZnCl

copper chloride + aluminum —> aluminum chloride + copperAgNO3 + NaCl —> NaNO3 + AgCl

Cu + AgCl —> CuCl + Agmagnesium bromide + zinc chloride —> magnesium chloride + zinc bromide

2CuCl + CaO —> CaCl2 + Cu2O

Zn + NaCl —> ZnCl2 + Na

CuNO3 + K —> Cu + KNO3

NaOH + KNO3 —> NaNO3 + KOH

NaCl + F2 —> NaF + Cl2

calcium + hydrogen chloride —>

hydrogen + calcium chloride

Double Displacement

Single Displacement

Single Displacement

Single Displacement

Double Displacement

Single Displacement

Lab time and be sure that you have completed the questions!

Single-Displacement Labs Reaction A:

1. What clue(s) suggested a chemical reaction took place?

2. What is the word equation?

Reactants Description Before Mixing Description After Mixing

Aluminum foil

Copper Chloride

Single-Displacement Labs Reaction B:

1. What clue(s) suggested a chemical reaction took place?

2. What is the word equation?

Reactants Description Before Mixing Description After Mixing

Magnesium

Hydrochloric acid (HCl)

Copper + Silver chloride —> Copper chloride + silver

Zinc + Hydrogen chloride —> Hydrogen + Zinc chloride

Sodium chloride + Fluorine —> Sodium fluoride + Chlorine

Aluminum + Copper chloride —> Copper + Aluminum chloride

Double Displacement lab

1.Obtain the dropper bottles and spot plate. 2.Place 5 drops of one chemical in a depression of the spot plate. 3.Place 5 drops of second into the same depression. 4.Observe and record any changes. (DID IT FORM A PRECIPITATE?) 5.Repeat this procedure in different depressions for each combination in the observation chart. 6.Dispose of the mixtures as instructed by the teacher.

Sodium chloride

Sodium hydroxide

Silver Nitrate

Copper Chloride

Double Displacement

• Which of the following are double displacement reactions?

Double Displacement (a) 2CuCl + CaO —> CaCl2 + Cu2O

(b) Zn + NaCl —> ZnCl2 + Na

(c) CuNO3 + K —> Cu + KNO3

(d) NaOH + KNO3 —> NaNO3 + KOH

(e) NaCl + F2 —> NaF + Cl2

(f) calcium + hydrogen chloride —> hydrogen + calcium chloride

Sodium hydroxide + Silver nitride —> Sodium nitride + Silver hydroxide

Copper chloride + Sodium hydroxide —> Copper hydroxide + Sodium nitride

Silver nitrate + Sodium chloride —> Silver chloride + Sodium nitrate

Copper chloride + Sodium hydroxide —> Copper hydroxide + Sodium chloride

SYNTHESIS REACTION

A + B = AB

Types of Reactions1. Synthesis Reaction

• Occurs when two or more reactants come together to make one large product.

Basically: A + B —> AB

Reactant + Reactant 2 —> 1 product

Example: 2Ag + O2 —> 2AgO

DECOMPOSITION REACTION

AB = A + B

Types of Reactions2 . Decomposition reaction

• when a compound is broken down into simpler products

Basically: AB —> A + B

Compound ---> product 1 + product 1

eg. 2Cu2O —> 4 Cu + O2

BaO + CO2 —> BaCO3

2KClO3 —> 2KCl + 3O2

2Ag2O —> 4Ag + O2

2P2O3 + 6H2O —> 4H3PO3

BeO + CO2 —> BeCO3

Synthesis

Synthesis

Synthesis

Decomposition

Decomposition

Which of the following is a synthesis or decomposition reaction?