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CHEMISTRY

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CHEMISTRY

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  1. CHEMISTRY F3 Bridging Course

  2. FORM 3 BRIDGING COURSE (2005) HKCEE EXAMINATION CHEMISTRY (English) BRIDGING COURSE INTEGRATED SCIENCE (CHINESE)

  3. LEARNING CHEMISTRY LEARNING CHEMISTRY (USING ENGLISH) CONSOLIDATE UNDERSTAND Listen Read Speak Write Practise (experiment)

  4. Arrangements • File (notes and worksheets) • Exercise book (homework) • Subject leader • 8 Groups in laboratory (leader) • 10 Study Groups

  5. Course Outline • Laboratory Safety • Common apparatus • Simple Experimental techniques • Chemicals and hazard warning labels • Observation exercises • What is Chemistry • Matter (Muddy sea water) • Elements and Atoms

  6. Laboratory Safety • Students should not enter the laboratory unless a teacher (or laboratory technician) is present. • Students should follow teacher’s instructions strictly. • Students should not remove anything from the laboratory without permission. • Students should not rush around or play in the laboratory. • Students should return apparatus and chemicals to the appropriate places after used. • Students should report all accidents and breakages to their teachers.

  7. Laboratory Safety (cont) • Eating, drinking and smoking are strictly forbidden in the laboratory. • Wear safety goggles in the laboratory whenever necessary. • Always read the label on a reagent bottle carefully before use. • Do not taste anything in the laboratory. • Always wash hands thoroughly after experiment. • Always tie up your long hair.

  8. Common apparatus • Add some water in a BEAKER. • Pour some water into a TEST TUBE. • Hold the test tube using a TEST TUBE HOLDER and shake it. • Pour some water into a MEASURING CYLINDER and read the volume. • Remove some water from the measuring cylinder with a DROPPER.

  9. Prepare a solution • Transfer some salt into a beaker using a SPATULA. • Add water to the 50 cm3 mark. • Stir the liquid with a GLASS ROD so as to dissolve the salt. • A clear solution is obtained.

  10. Bunsen Burner • Close the AIR HOLE • Turn on the GAS SUPPLY and Light the lighter/ or Match • Adjust the air hole • NON-LUMINOUS FLAME

  11. Bunsen Burner • BURNING • (solid Fuel, liquid fuel, gaseous fuel) • HEATING • TEST/ BOILING TUBE (liquid/ solution) • CRUCIBLE (solid) • BOILING • BEAKER, BOILING TUBE (liquid/ solution) • EVAPORATING • EVAPORATING DISH (solution)

  12. Simple experimental techniques • Mix two solutions using test tubes. • Heat some solution in a test tube. • Boil some solution in a boiling tube. • Evaporate some solution. • Filter a mixture (of mud and water). • Distill a mixture (to get the liquid). • Crystallize the solid from a solution.

  13. Hazard Warning Labels • FLAMMABLE • HARMFUL / IRRITANT • TOXIC • CORROSIVE • EXPLOSIVE • OXIDIZING • CARCINOGEN

  14. Observation Exercises • Mix solutions A and B. • Mix solutions C and D. • Mix solutions E and F. • Mix solutions G and H. • Add solution I to solid J. • Add solution K to solid L. • Pass gas M to solution N.

  15. Observation Exercises • Mix solutions A and B. (orange solution) • Mix solutions C and D. (brown solution) • Mix solutions E and F. (blue precipitate) • Mix solutions G and H. (white precipitate) • Add solution I to solid J. (colourless gas) • Add solution K to solid L. (brown gas) • Pass gas M to solution N.(milky)