HKDSE Chemistry
IGCSE Chemistry
IAL Chemistry
GCE Chemistry
IB Chemistry

Gary Sir

* HKU Chemistry
* HKCEE Chemistry A
* HKALE Chemistry A
* HKDSE Chemistry 5** x 2

DSE Chemistry tutor
IAL Chemistry tutor
GCE Chemistry tutor

Contact gary
60551219 (whatsapp)




Chemistry Experiment

1. Displacement reaction

2. Test pH of tartaric acid and calcium hyroxide using universal indicator

calcium hydroxide pH

universal indicator

3. Investigate the reaction between metal and acid

metal acid reaction

magnesium, zinc and acid reaction

Left: Mg ribbon + tartaric acid
Right: Zinc granules + tartaric acid

Hydrogen bubbles on surface of magnesium ribbon and zinc granules

Clean magnesium ribbon after the reaction

clean magnesium ribbon