Home
Videos uploaded by user “Ong SK 1984”
Testing for gas   sulphur dioxide gas
 
01:43
Apparatus needed: 1) solid sodium sulphite 2) dilute hydrochloric acid 3) potassium manganate (VII) solution 4) litmus paper 5) filter paper strip 6) test tube and rack 7) test tube holder 8) Bunsen Burner 9) spatula and dropper 10) stopper
Views: 25088 Ong SK 1984
Photosynthesis - variegated leaf
 
01:38
To test for starch in a leaf
Views: 19546 Ong SK 1984
Testing for gas   Carbon Dioxide
 
02:01
To determine the colour and smell and identify a test for the gas.
Views: 73310 Ong SK 1984
Food Test - Test for fats
 
02:51
Experiment - Test for the presence of fats in peanuts.
Views: 48227 Ong SK 1984
Testing for gas -  Ammonia gas
 
01:37
Apparatus needed; 1) solid ammonium chloride 2) diulute sodium hydroxide 3) concentrated hydrochloride acid 4) litmus paper 6) glass rod 7) spatula 8) test tube holder 9) test tube and rack 10) Bunsen Burner
Views: 16028 Ong SK 1984
Food test - Test for reducing sugar
 
05:22
Test for the presence of reducing sugar in banana
Views: 50969 Ong SK 1984
Tests for cations react with dilute ammonia solution
 
02:15
using 0.2 mole cations solution
Views: 3494 Ong SK 1984
Testing for anions
 
05:10
Testing for anions: carbonate, sulfate, chloride, iodide and nitrate
Views: 10357 Ong SK 1984
Food test - Test for Proteins
 
02:43
Test for the presence of proteins in fresh milk
Views: 30398 Ong SK 1984
Testing for Gas - Oxygen Gas
 
01:12
To determine the colour and smell and identify a test for gas.
Views: 30085 Ong SK 1984
crystallisation 2 - Copper Carbonate and Dilute Sulphuric Acid
 
01:56
To make copper sulphate from copper carbonate.
Views: 7159 Ong SK 1984
Heat - Ball and Ring
 
01:04
With the rise in temperature of the ball comes an increase in size. the diameter of the ball has increased in all directions. The expansion in area of a solid is known as superficial expansion and the expansion in volume is called cubical expansion.
Views: 35188 Ong SK 1984
Preparation of Oxygen gas.
 
01:29
Oxygen gas is colourless and odourless. insert a glowing splint into the gas, the glowing splint is relights.
Views: 2344 Ong SK 1984
Testing for Gas - Hydrogen Gas
 
01:20
To determine the colour and smell and identify a test for gas.
Views: 2444 Ong SK 1984
Food test - Test for starch
 
01:34
Test for the presence of starch in rice.
Views: 2474 Ong SK 1984
Magic of Chemistry: Acids, bases and salts
 
01:26
water - red wine - fresh milk - sparkling juice
Views: 1149 Ong SK 1984
Effect of concentration on Speed of Reaction
 
02:26
The concentration of hydrochloric acid is 0.5 mol.
Views: 6172 Ong SK 1984
Heat - Bar and Gauge
 
00:51
The gauge shows that the bar has increased in length, which is called linear expansion.
Views: 2396 Ong SK 1984
Testing for gas - chlorine gas
 
01:04
To determine the colour and smell and identify a test for gas.
Views: 20751 Ong SK 1984
Test for cations react with dilute sodium hydroxide
 
02:44
Using 0.2 mole cations solution
Views: 2641 Ong SK 1984
Chlorine gas
 
01:37
Alternative using bleach solution and equal amount of dilute hydrochloric acid to prepare chlorine gas.
Views: 1729 Ong SK 1984
Volumetric Analysis - Acid and Alkali
 
03:46
Draw up 25 ml of the sodium hydroxide into a pipette and place it into a conical flask. Fill the burette with the hydrochloric acid solution. Add a few drops of methyl orange into the sodium hydroxide. Then run the acid into the titration flask. The indicator changes colour from yellow to orange when all the hydrochloric acid has reached. Record the volume of hydrochlor acid used.
Views: 1028 Ong SK 1984
Food test
 
03:57
Iodine test, Ethanol emulsion test, Benedict's test and Biuret test
Views: 2470 Ong SK 1984
Steam turbine
 
02:52
Heat: Heat engines
Views: 78 Ong SK 1984
Magic trick 9: Fire water balloon
 
01:33
Description
Views: 110 Ong SK 1984
Magic trick 1: Corn flour and water
 
01:43
Description
Views: 910 Ong SK 1984
Magic trick 6: Egg in a bottle
 
01:11
Description
Views: 177 Ong SK 1984
chromatography - strip
 
02:05
By using mixture of green, blue and red food dyes.
Views: 233 Ong SK 1984
electromagnet part 1 using u shape magnet
 
00:49
the catapult force which acts on a wire carrying a current. When current passed through the wire it swings out sideways.
Views: 1857 Ong SK 1984
inhale and exhale
 
01:25
Views: 97 Ong SK 1984
electromagnet part 3 sit a piece of copper wire on two copper rods
 
00:49
The force acting on a wire carrying a current in a magnetic field.
Views: 157 Ong SK 1984
ammonia gas
 
00:49
Views: 173 Ong SK 1984
Magic trick 2: Vinegar and sodium bicarbonate
 
01:09
Chemicals: 20 g sodium bicarbonate 100 ml vinegar
Views: 236 Ong SK 1984