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: 24130 Ong SK 1984
Photosynthesis - variegated leaf
 
01:38
To test for starch in a leaf
Views: 18641 Ong SK 1984
Testing for gas   Carbon Dioxide
 
02:01
To determine the colour and smell and identify a test for the gas.
Views: 70874 Ong SK 1984
Food Test - Test for fats
 
02:51
Experiment - Test for the presence of fats in peanuts.
Views: 45869 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: 15208 Ong SK 1984
Food test - Test for reducing sugar
 
05:22
Test for the presence of reducing sugar in banana
Views: 48807 Ong SK 1984
Food test - Test for Proteins
 
02:43
Test for the presence of proteins in fresh milk
Views: 29449 Ong SK 1984
Tests for cations react with dilute ammonia solution
 
02:15
using 0.2 mole cations solution
Views: 3321 Ong SK 1984
Testing for anions
 
05:10
Testing for anions: carbonate, sulfate, chloride, iodide and nitrate
Views: 10002 Ong SK 1984
Testing for Gas - Oxygen Gas
 
01:12
To determine the colour and smell and identify a test for gas.
Views: 28046 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: 33455 Ong SK 1984
crystallisation 2 - Copper Carbonate and Dilute Sulphuric Acid
 
01:56
To make copper sulphate from copper carbonate.
Views: 6797 Ong SK 1984
Food test - Test for starch
 
01:34
Test for the presence of starch in rice.
Views: 2435 Ong SK 1984
Testing for Gas - Hydrogen Gas
 
01:20
To determine the colour and smell and identify a test for gas.
Views: 2405 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: 2317 Ong SK 1984
Effect of concentration on Speed of Reaction
 
02:26
The concentration of hydrochloric acid is 0.5 mol.
Views: 6020 Ong SK 1984
Food test
 
03:57
Iodine test, Ethanol emulsion test, Benedict's test and Biuret test
Views: 2447 Ong SK 1984
Test for cations react with dilute sodium hydroxide
 
02:44
Using 0.2 mole cations solution
Views: 2545 Ong SK 1984
Testing for gas - chlorine gas
 
01:04
To determine the colour and smell and identify a test for gas.
Views: 19493 Ong SK 1984
Magic of Chemistry: Acids, bases and salts
 
01:26
water - red wine - fresh milk - sparkling juice
Views: 1119 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: 2255 Ong SK 1984
Chlorine gas
 
01:37
Alternative using bleach solution and equal amount of dilute hydrochloric acid to prepare chlorine gas.
Views: 1672 Ong SK 1984
Magic trick 1: Corn flour and water
 
01:43
Description
Views: 865 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: 1023 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: 156 Ong SK 1984
Convention in liquid
 
02:21
Views: 133 Ong SK 1984
Steam turbine
 
02:52
Heat: Heat engines
Views: 78 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: 1827 Ong SK 1984
Magic trick 2: Vinegar and sodium bicarbonate
 
01:09
Chemicals: 20 g sodium bicarbonate 100 ml vinegar
Views: 231 Ong SK 1984
Magic trick 9: Fire water balloon
 
01:33
Description
Views: 109 Ong SK 1984
ammonia gas
 
00:49
Views: 168 Ong SK 1984
electrolysis of dil NaCl
 
01:06
Description
Views: 341 Ong SK 1984
carbon dioxide
 
02:03
Carbon dioxide gas is produced. It gives a white precipitate with limewater.
Views: 117 Ong SK 1984
chromatography - strip
 
02:05
By using mixture of green, blue and red food dyes.
Views: 223 Ong SK 1984

Chat audio video gmail android help
Dating sites seattle washington
Here!
Vegan dating sites review
Here!