Do Now:1) Balance this equation:

CaC2(s) + H2O(l) C2H2(g) + Ca(OH)2(s)CaCHO

1221

1242

2

42

Types of chemical reactions

Chemical Reactions

Types of Chemical ReactionsDecomposition (breaking down)

Synthesis (composition)Single Displacement (single

replacement)Double Displacement (double replacement)

Combustion (burning)Redox (reduction/oxidation)

1) Synthesis ReactionsAssembling smaller parts

into something new…A + B AB

2H2(g) + O2(g) 2H2O(g)

2) Combustion ReactionBurning requires…

Fuel + oxidizer fuel oxidewith flames present.

2H2(g) + O2(g) 2H2O(g) + fire

CH4 + 2O2 CO2 + 2H2O + fire

3) Decomposition Reactions

Breaking down into parts…AB A + B

2H2O(l) 2H2(g) + O2(g)

4) Single Displacement Reactions

One thing gets pushed out of the way…

A + BC B + AC

Fe2O3 + 2Al Al2O3 + 2Fe

5) Double Displacement ReactionsTwo things get moved to new

places…

AB + CD AD + CB

PbCl2 + 2NaI PbI2 + 2NaCl

3Mg(s) + N2(g) Mg3N2(s)

NiCl2(aq) + 2NaOH Ni(OH)2 (s) + 2NaCl(aq)

2Na(s) + 2HOH(l) 2NaOH(aq) + H2(g)

(NH4)2CO3 (s) 2NH3(g) + H2O(l) + CO2(g)

2Cu(s) + S (s) Cu2S(s)

HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l)

What type of reaction is this?Synthesis

Double Displacement

SingleDisplacement

Decomposition

Synthesis

Double Displacement

2) Write a balanced equation for this reaction:

Dicarbon dihydride burns in oxygen to produce carbon dioxide and water vapor.

(Identify the type of reaction)

Do Now 3/1