5.2 SALTS

1

What are salts?Salts are a class of ionic

compounds that can be produced when an acid and a base react

HA + BOH BA + H2O

acid + base salt + water

A salt is made up of a positive ionfrom a base and a negative ion from an

acid.

HA + BOH BA + H2O

acid + base salt + water

HCl + KOH KCl + H2O

A salt is made up of a positive ionfrom a base and a negative ion from an

acid.

HA + BOH BA + H2O

acid + base salt + water

Acid – Base Neutralization

Acid – Base Neutralization

HA + BOH BA + HOH

HA + BOH BA + H2O

Acid – Base Neutralization

Read page 234 – 236 and do:

Acid – Base Neutralization

page 91

WORKBOOK

acidacid

base

acid

base

acid

acid

acid

salt

base

salt

base

acid

salt

salt

acid

salt

base

acid

acid

base

salt

10

Metal Oxides• Metals react with oxygen to form metal

oxides

Na2OK2OCaO

MgO

Metal Oxides

Non - Metal OxidesNon - Metals react with oxygen to form non metal

oxides

CO2

Non - Metal Oxides

SO2

NO

CO

Metal Oxides React with Water• when a metal oxide dissolve in

water...

MO(s) + HOH(l) MOH(aq)

MO(s) + H2O(l) …

metal oxide + water base

Na2O(s) + H2O(l) 2 NaOH(aq)

Metal Oxides React with Water• when a metal oxide dissolve in

water...

MO(s) + HOH(l) MOH(aq)

Na2O(s) + H2O(l) 2 NaOH(aq)

The solution is BASIC

MO(s) + H2O(l) …

Non - Metal Oxides React with Water• when a non - metal oxide dissolve

in water...

SO2(s) + H2O(l) 2 H2SO3(aq)

NO(s) + H2O(l) …

The solution is ACIDIC

non - metal oxide + water acid

Metal Oxides and Non – Metal OxidesRead page 237 and do:

Metal Oxides and Non – Metal Oxides

page 93

WORKBOOK

metal oxide + water base

non - metal oxide + water acid

18

metal oxide + water base

non - metal oxide + water acid

metal oxide + water base

non - metal oxide + water acid

20

metal oxide + water base

non - metal oxide + water acid

acidbase

base

acid

Metals and Acids

• Metals of Groups 1 and 2 (Alkali Metals and Alkaline Earth Metals)

Metals and Acids

• Metals of Groups 1 and 2 (Alkali Metals and Alkaline Earth Metals) react vigorously with

water and acids

• Other metals are not that reactive with acids

Metals and AcidsWhen a metal reacts with an acid, a salt and usually hydrogen gas is

produced

HA + M MA + H2

acid + metal salt + hydrogen

Metals and AcidsWhen a metal reacts with an acid, a salt and usually hydrogen gas is

produced

HA + M MA + H2

HCl(aq) + Mg(s) MgCl2(aq) + H2(g)

Metals and Acids

Read page 238 and do:

Carbonates and Acids

CO32-

Metal Carbonates

CaCO3

MgCO3Na2CO

3K2CO3

Carbonates and Acids

CO32-

Carbonate rocks react with acids to produce...

metal carbonate + acid salt + water + carbon

dioxide

Carbonates and Acids

CO32-

Carbonate rocks react with acids to produce...

CaCO3 + H2SO4 CaSO4 + H2O + CO2

5.2 Check Your Understanding

page 93

TEXTBOOK

•Date: Wednesday, Dec 18

5.2 SALTS QUIZ