Types of Chemical ReactionsWe will study 4 types

Synthesis (or combination) ReactionsInvolve the combination of smaller atoms and/or molecules into larger molecules.

ABBA Example:

hydrogen + oxygen waterOHOH 222

Synthesis (or combination) ReactionsInvolve the combination of smaller atoms and/or molecules into larger molecules.

ABBA Example:

hydrogen + oxygen waterOHOH 222 OHOH 222 22

Decomposition Reactions

Involve the splitting of larger molecules into smaller atoms and/or molecules.

BAAB Example:

water hydrogen + oxygen

222 OHOH

Decomposition Reactions

Involve the splitting of larger molecules into smaller atoms and/or molecules.

BAAB Example:

water hydrogen + oxygen

222 OHOH

222 22 OHOH

Single Displacement Reactions

Chemical changes that involve an element and a compound as reactants. One element displaces or replaces another element from a compound.

ABXBAX

Single Displacement Reactions

Example:magnesium + silver nitrate silver + magnesium nitrate

233 )(NOMgAgAgNOMg

233 )(22 NOMgAgAgNOMg

Double Displacement Reactions

Elements in different compounds displace each other.

BXAYBYAX

Double Displacement Reactions

Example:

lead(II) nitrate + potassium iodide lead(II) iodide + potassium nitrate

3223 KNOPbIKINOPb

3223 22 KNOPbIKINOPb

Homework

Read 6.7 and 6.10 Complete pg. 235 #2-4 Complete pg. 241 #1-3 Complete pg 243 #1-7 Complete pg 245 # 1-4 Complete pg 247 #1-6

Pg 235 2-4 a)

iron + oxygen iron(III) oxide

322 OFeOFe

322 234 OFeOFe

synthesis

Pg 235 2-4 b)

sodium iodide sodium + iodine

2INaNaI

decomposition

222 INaNaI

Pg 235 2-4 d)

zinc carbonate zinc oxide + carbon dioxide

23 COZnOZnCO

decomposition

Pg 241 1

a) Double displacement reaction

b) Single displacement reaction

c) Synthesis reaction

d) Decomposition reaction

Pg 241 2,3 a)

copper + silver nitrate silver + copper(II) nitrate

233 NOCuAgAgNOCu

233 22 NOCuAgAgNOCu

single displacement

Pg 241 2,3 b)

zinc + hydrochloric acid hydrogen + zinc chloride

22 ZnClHHClZn

222 ZnClHHClZn

single displacement

Pg 241 2,3 c)

calcium carbonate + hydrochloric acid carbonic acid + calcium chloride

2323 CaClCOHHClCaCO

2323 2 CaClCOHHClCaCO double displacement

Pg 241 2,3 d)

aluminum + copper(II) chloride copper + aluminum chloride

32 AlClCuCuClAl

32 2332 AlClCuCuClAl

single displacement

2 a)