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Metals & Plastics
I'm sorry I can't remember what to put here. By Dr. Dracula
Term | Definition |
---|---|
Copper | Metal of reddish-orange color. Used in wires because of good conducting properties. Symbol Cu |
Zinc | Metal of silver color. Used for galvanizing. Symbol Zn. |
Aluminium | Metal of silver color. Used for making aluminium foil. Symbol Al. |
Iron | Metal of grey color. Used in production of cars. Symbol Fe. |
Silver | Metal of silver color. Used in jewelry. Symbol Ag. |
Gold | Metal of golden color. Used in jewelry and electronics. Symbol Au. |
Carbon | Non-Metal of grey color (graphite) or transparent (diamond). Used in production of pencils, jewelry etc. Symbol C. |
Oxygen | Non-Metal, Gas. Used in blast furnaces in order to get to very high temps. Symbol O. |
Sulfur | Non-Metal. Used in batteries. Symbol S. |
Hydrogen | Non-Metal, Gas. Used in power stations as a coolant for generators. Symbol H. |
Nitrogen | Non-Metal, Gas. Used in manufacturing stainless steel. Symbol N |
Metals | Shiny, have high melting points, strong, ductile and conductors. |
Non-Metals | Dull, inelastic, low melting point, bad conductors, brittle. |
Alloy | A mixture of metals. Example: Brass, Bronze, Steel, Solder etc. |
Brass | Alloy made out of copper and zinc. |
Bronze | Alloy made out of copper and tin. |
Steel | Alloy made out of iron and carbon. |
Solder | Alloy made out of lead and tin. |
Alkali Metals | Metals that react vigorously in contact with water. Also they are silvery and soft. |
Rusting | Corrosion of iron and steel is also called rusting. Conditions necessary for rusting: water and oxygen. |
Plastics Part 1. | Man-made, moldable , easy to maintain, cheap, light and good insulators. |
Plastics Part 2. | Plastics are non-biodegradable. That means that they cannot be broken down by micro-organisms. |
Plastics Part 3. | When burnt they release poisonous fumes. |
Types of plastics Part 1. | Polythene (plastic bag), Polystyrene ( that thing eggs are put in). |
Types of plastics Part 2. | Polypropylene (plastic chairs), Nylon (Tennis Rackets), P.V.C (plastic hose). |