• Lau Wing Ni 3A (27) • Chan Amy Wai Sum 3A

(21)• Lam Ka Yee 3A (26)• Tse Wing Yin 3A (36)• Tsui Ka Lam 3A (37)• Yuen Lai Shan 3A (41)

• A member of the poor metal group of chemical elements• Found primarily in bauxite ore• The most abundant in the earth's crust • Has the symbol Al and atomic number 13

• Transportation (aircraft, bicycles etc.)• Making cooking utensils• Construction (window frames, door etc.)• Making electrical transmission lines• Making the spectacle frames• Packaging

• A long chain hydrocarbon with every other carbon• A polymer made from the monomer styrene, which is a liquid hydrocarbon• Produced either as a solid or as a foamed plastic • Usually low in price

• Biology (Petri dish and test tube)• Package for food• Protect articles from breakage• Water-based paint

Properties of polystyrene and aluminum

Polystyrene Aluminum

1) Transparent Dull gray appearance

2) Resistant to acids, alkalis, oils, and alcohols

Highly resistant to corrosion

3) Insulator of electricity Conductor of electricity

4) Low density Low density

Uses of polystyrene and aluminum in daily life

Polystyrene Aluminum

1) Make transparent containers

Transportation (aircraft, bicycles, etc.)

2) Packaging for food Construction (window frames, door, etc.)

3) Used as disposable foam cups and food boxes

Make aluminum cans