Grade 12 Chemistry Examination Units and Topics

Chemistry Examination Topics and Units

If you are a Grade 12 Science student who is studying Chemistry , you must focus your study on the units and topics outlined below. The Chemistry subject is taught at Grade 11 and 12 in the Upper Secondary in schools in PNG. Students must fully study the units and topics as examinations Questions for Grade 12 covers both Grade 11 and 12 units and topics in chemistry.

Grade 11 Chemistry Units

There are five (5) units in Grade 11 Chemistry and several topics fall under those units. It is a MUST that students study all the units. Teachers who are teaching chemistry must fully teach the topics as examination in Grade 12 covers all course units (Both Grade 11 and 12).

Grade 11 Chemistry Units and Topics
11.1 Application of Physical Processes

Diffusion
Behaviour of gases
Pure and impure substances
Separation of mixtures
Solubility of solids and gases in water

11.2 Chemical and Metallic Bonding

Electron shell diagrams of atoms and ions
Trends in the periodic table
Chemical bonding
Metallic bonding

11.3 Types of Chemical Reactions

Indicators of chemical changes
Types of reactions
Exothermic and endothermic reactions

11.4 Energy and Reaction Rates

Factors affecting rates of reactions
Energy diagrams

11.5 Metals and Non-metals

Properties of metals, metalloids and nonmetals
Uses of metals and metal alloys
Chemistry of nitrogen and nitrogen
compounds
Chemistry of sulfur and sulfur compounds
Chemistry of phosphorous and phosphate
fertilisers

Examination Specification (Generic)

For unit11.1 you will expect, 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit11.2 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit11.3 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit11.4 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit11.5 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

Note that the Education department through the Measurement services sets Grade 12 Chemistry examination based on both Grade 11 and 12 units. The number of questions asked per unit varies every year. The above specification is a guide only.

Grde 12 Chemistry Units

There are five(5) Units for the Grade 12 Chemistry. These units have several topics that all students must master and teachers must teach. The Chemistry Examination Specification is also outlined.

12.1 Masses, Moles and Concentrations

Isotopes
•Relative formula mass and percentage
composition
Moles
Empirical and molecular formula
Stoichiometry
Solutions

12.2 Acids, Bases and Salts

Common acids and bases
Properties of acids and bases
Strong and weak acids and bases
Dissociation constants and pH calculations
Acid-base titration to detect the end point
(volumetric analysis)

12.3 Electrochemistry

Electrolysis
Galvanic cells

12.4 Carbon Compounds

Homologous series
Hydrocarbons
Alcohols
Aldehydes
Ketones
Carboxylic acids and esters

12.5 Natural Resources and Chemical
Industries in Papua New Guinea

Crude oil
Metallic ores
Production of ethanol
Production and uses of vegetable oils
Traditional chemical practices
Industrial chemical pollution

Examination Specification for Grade 12 Chemistry Units (Generic)

For unit12.1 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit12.2 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit12.3 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit12.4 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

For unit12.5 : 3 multiple Choices Questions, 1 Short Answer Question worth 7 marks.

Preparing to face the Grade 12 chemistry examination

The Grade 12 Chemistry Examination covers both the Grade 11 and 12 units and topics.

As a Chemistry teacher, you must

teach all topics in each of the ten units.
revise old examination papers
give trial examinations to students
prepare your students well
not couch students but must teach them.
complete their assessments

You as a student must:

study all the topics in each of the ten units
sit for trial examinations
ask questions if you not understand a chemistry concept.
prepare for examinations.

also check out :