Types of Reactions and Activity Series

Types of Reactions

There are 5 different types of chemical reactions. Each of them have a certain format.

1. Synthesis Reaction

2. Decomposition Reaction

3. Single Replacement Reaction

4. Double Replacement Reaction

5. Combustion Reaction

Type of Reaction Format

Synthesis/Combination A + B AB

Decomposition AB A + B

Single Replacement(Use Activity Series Chart)

A + BC AC + BOR

A + BC BA + C

Double Replacement(Precipitate Reaction)

AB + CD AD + CB

Combustion A + O2 CO2 + H2O

RedoxReduction: A-

A + e-

Oxidation: B + e- B-

Guided Practice…. Just for fun The Dance….Chris and Rihanna were both single. No one was talking

about "Chris and Rihanna" being together before the dance. They both go to the dance alone. However, they meet at just the perfect time when Chris’s new song is playing. After that fateful meeting no one ever sees Chris without Rihanna, they are forever referred to as "Chrianna"

• Represent the drama of Chris and Rihanna as a

chemical equation. Use C to represent

Chris and R to represent Rihanna.

• If C and R represent elements can you

describe what type of reaction is happening?

The dance continues…..• Later that same evening Jay-Z and Beyonce, who have been

‘the couple’ forever, have a heated quarrel and break up.

• Represent the drama of Jay-Z and Beyonce

as a chemical equation? Use J to represent

Jay-Z and B to represent Beyonce.

• If J and B represent elements can you

describe what type of reaction is happening?

And there’s more…• Rihanna decides that she wants play “hard to get” to make

sure Chris really likes her. She finds Jay-Z on the dance floor and starts dancing with him. The picture below shows what happened.

• Write a chemical reaction for this scenario. Use R to represent Rihanna, C to represent Chris Brown, and J to represent Jay-Z.

+ +

The end of the night…• In their blissful state, Chris and Rihanna (CR) try to help Jay-Z and

Beyonce (JB) reconcile their differences. After everyone agrees to stop quarreling, Chris asks Beyonce to dance. Jay-Z and Rihannadecided that they will dance together as well.

• Represent the drama between Chris, Rihanna, Jay-Z, and Beyonce in a chemical equation. Use CR to represent Chris and Rihanna and JB to represent Jay-Z and Beyonce.

• What type of reaction does this scenario represent?

++

Guided PracticeDirections: Identify the type of reaction below

1. K2O + H2O 2 KOH

2. 2 H2O2 2 H2O + O2

3. C + H2O CO + H2

4. Al2(SO4)3 + 3 Ca(OH)2 2 Al(OH)3 + 3 CaSO4

5. Sb + O2 Sb4O6

6. 2 C2H2 + 5 O2 4 CO2 + 2 H2O

Predicting Chemical Reactions based on

Activity Series

Use your Activity Series Chart

Activity Series We use the activity series of metals to predict whether a single replacement reaction will occur.

No need to memorize but make sure you know how to read/use this chart

How does it work?The reaction below will only takeplace if the metal that wants toreplace the other sits higher onthe activity series chart.

Example

Ca + Pb(NO3)2 ?

Note: Does Calcium sit higher orlower than lead on the ActivitySeries chart? HIGHER

Ca + Pb(NO3)2 Pb + Ca(NO3)2

Guided Practice ____Al + ____AuSO4

Answer: Au + Al(SO4)3

____Na + ____MgCl2

Answer: Mg + NaCl

____Zn + ____Al2(SO4)3

Answer: No Reaction