Types Of Chemical Reactions.pptx

Types of Chemical Reactions

Hydrogen gas

H

and

Chlorine gas

+ reactants

Cl

combine to form

Hydrochloric acid

HCl product

Types of Chemical Reactions Synthesis Decomposition Combustion Single Displacement Double Displacement

Synthesis/Combination

A compound is formed from simpler materials C

(s)

+

Na (s) +

O2 (g) Cl2 (g)

CO2 (g) NaCl (s)

Start with simpler substances and combining to create a more complex substance/s

Decomposition A compound is broken down into simpler compounds, or all the way down to the elements that make it up.

H2O(l)

H2 (g) +

O2

CaCO3 (s)

CaO(s)

+ CO2 (g)

(g)

Opposite of synthesis reaction.

Combustion A compound containing carbon and hydrogen (and sometimes oxygen) combines with oxygen gas to produce carbon dioxide and water

CH4(g) + O2(g) C3H8(g) + O2(g) C2H5OH(l) + O2(g) CxHy(Oz) + O2

CO2 (g) + H2O (l) CO2 (g) + H2O (l) CO2 (g) + H2O (l) CO2 + H2O

Single Dis/Replacement One element that starts out by itself replaces another element in a compound, kicking it out.

Fe(s) + CuCl2(aq)

Cu (s) + FeCl2(aq)

Cu (s) + AgNO3 (aq)

Ag (s) + Cu(NO3)2(aq)

C2H5OH(l) + O2(g) A + BC

CO2 (g) + H2O (l) B + AC

DoubleDis/Replacement The positive and negative ions n two compounds switch places BaCl2(aq) + Na2SO4 (aq)

AB + CD

BaSO4 (s) + NaCl(aq)

AD + BC

Synthesis

A

Decomposition

AB

+

B

Combustion CxHy(Oz) + O2

AB

A

+

B

CO2 + H2O

Single replacement

A + BC

B + AC

Double replacement

AB + CD

AD + BC

Exercise: Identify the type of chemical reaction 1. 2. 3. 4. 5.

NaOH + KNO3 NaNO3 + KOH CH4 + O2 CO2 + H2O Fe + NaBr FeBr3 + Na P4 + O2 P2O5 NaNO3 NaNO2 + O2