TOPIC: USES OF MATERIALS (METAL)
OBJECTIVE: At the end of the lesson, the students should be able to:
1. Mention the classes of metal.
2. Highlight the uses of metal.
CONTENT:
Metals can be classified as
1. Ferrous metals

2. Non-ferrous metals
DIFFERENCES BETWEEN FERROUS AND NON-FERROUS METALS
FERROUS METAL................................NON-FERROUS METAL
They contain iron .................................They do not contain iron.
They are magnetic................................They are not magnetic
Examples are cast iron, wrought iron and steel......Examples are aluminium, zinc, and copper.
USES OF METALS
METALS...................PROPERTIES..................................USES
Stainless steel..........It does not rust.........For processing foods and chemicals
Aluminium................Light in weight and does not rust......For manufacturing cooking utensils
High carbon steel ......Shear resistant.............For manufacturing cutting tools, pliers, drills,Punches and hammer heads.
Nichrome (alloy).........Opposes flow of electricity....For manufacturing electrical resistant objects
Mild steel ...................Soft to work on..........Manufacturing of all structural work, bolts,
Non-cutting tools, nuts.
Cast iron....................Wear resistant...........For manufacturing piston rings, cylinder blocks
Uses of Metals
Iron metal is use for making cooking vessels , water boilers , stoves,tools , wires,nails , bolts , electromagnets etc.
Aluminium is very light metal so it is use in making the aircraft bodies.
Copper is most widely use for making electric wires and all things related to electricity
because it is a good conductor of electricity.
Silver is widely use for making jewellery.
Uses of Non-Metals
Phosphorous is used in match-box industry and in fertilizers.
Iodine is used as antiseptic.
Oxygen is essential for all living beings.
Sulphur is used for making fire crackers,gun powder and sulphuric acid.
EVALUATION:
Mention the classes of metal.
Enumerate the differences between the classes of metals.
Highlight the uses of metals.
further studies
http://www.preservearticles.com/2011010 ... etals.html
http://www.themetalinitiative.com/conte ... _of_metal/
http://www.bbc.co.uk/schools/gcsebitesi ... rev4.shtml
http://chestofbooks.com/home-improvemen ... apLjtK1EiU
practice test
http://www.sciencekids.co.nz/quizzes/metal.html
http://dsc.discovery.com/tv-shows/curio ... s-quiz.htm
http://www.educationquizzes.com/gcse/ch ... d-uses-of/
LESSON 11
TOPIC: USES OF MATERIAL (CERAMIC)
OBJECTIVE: At the end of the lesson, the students should be able to:
1. Identify ceramic objects.
2. State the properties of ceramics.
3. Mention the uses of ceramics.
CONTENT:
CERAMICS
Ceramics are objects made of clay and hardened by heat e.g. clay pots, tile, blocks etc.
Ceramics can be identified based on their properties.
The following are the properties of ceramics.
1. Brittleness - ceramics break easily.
2. Heat resistant - ceramics have high melting point.
3. Inorganic materials - ceramics are produced using artificial chemicals.
4. Non-metallic - they are insulators.
5. Hardness - ceramics are hard in shape and appearance.
Other ceramic materials are glass, plasters, clay and cement materials.
USES OF CERAMIC
Ceramics are used for making articles such as:
1. W.C (modern toilet)

2. Portrait

3. Ceramic bakery oven

4. Electric socket

5. T.V screen

6. Electric stove

7. Concrete or block

8. Spark plug.
Glass is a type of ceramic that is composed of sand (silica), soda and lime. These major ingredients are mixed and melted to such a temperature that all the gases are given off and a clear liquid is obtained.
FORMS OF GLASS
1. Sheet glass
2. Plate glass
3. Rolled glass
EVALUATION:
State the properties of ceramic.
Mention the use of ceramic.
Mention ceramic materials.
ASSIGNMENT:
Mention 5 uses of glass.
further studies
http://www.scribd.com/doc/7029380/Chemi ... ss-Ceramic
http://ezinearticles.com/?Ceramics---A- ... id=3268181
practice test
http://quizlet.com/10612249/ceramics-qu ... ash-cards/
http://matse1.matse.illinois.edu/ceramics/quiz.html
http://www.proprofs.com/quiz-school/qui ... &quesnum=1
http://www.flashcardexchange.com/cards/ ... uiz-555297