Types of Chemical Reactions

This is not an exhaustive list of reactions, but for this chapter, we will focus on the following reactions

• Synthesis (combination)• Decomposition• Single replacement• Double replacement• Combustion

• Quiz Time

Click on each of the following reactions to review its concepts

Combustion

• Occurs when a compound reacts with atmospheric oxygen

• CxHy + O2 → CO2 + H2O

• CH4 + O2 → CO2 + H2O

Synthesis

• Taking single elements or compounds and combining them into one compound

• A + B → AB

• 2 Na + H2 → 2NaH

• Ca + F2 → CaF2

Decomposition

• A compound breaking into several compounds or elements

• AB → A + B

• H2O2 → H2O + H2

Single replacement• Occurs when a single element and a

compound react to form a single element and a compound

• A + CD → C + AD (cationic single replacement)

• Li + CuNO3 → Cu + LiNO3

• B + AD → D + AB (anionic single replacement)

• F2 + BaI2 → I2 + BaF2

Double Replacement• Occurs when two compounds react

with each other and form two new compounds

• AB + CD → CB + AD

• NaOH + HCl → NaCl + H2O

• 2LiBr + MgSO4 → Li2SO4 + MgBr2

Chemical rxns

What type of rxnIs this?

Chem4kidsOnline quiz

School DiscoveryQuiz

ZnO(s) + 2HCl(l) → ZnCl2 + H2O(l)

• combination

• single replacement

• double replacement

• decomposition

• combustion

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.

Ba(s) + 2H2O(l) → Ba(OH)2(s) + H2(g)

• combination

• single replacement

• double replacement

• decomposition

• combustion

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

C7H16(g) + 11O2(g) → 7CO2(g) + 8H2O(g)

• combination

• single replacement

• double replacement

• decomposition

• combustion

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

2K(s) + F2(g) → 2KF(s)

• combination

• single replacement

• double replacement

• decomposition

• combustion

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

MgCl2(l) → Mg(l) + Cl2(g)

• combination

• single replacement

• double replacement

• decomposition

• combustion

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.

Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)

• combination

• single replacement

• double replacement

• decomposition

• combustion

WOW! You are a genius!!

You are well on your way to becoming a Chemistry nerd

What are you thinking!?!

You really need to study more. Now go back to the question and think harder.