Thursday, January 31, 2008
Sunday, January 20, 2008
Metal-acid reaction
http://www.youtube.com/watch?v=Fb8vk4H0SGg
Even a cooler video - the copper coin disappeared (actually reacted completely) with concentrated nitric acid.
Even a cooler video - the copper coin disappeared (actually reacted completely) with concentrated nitric acid.
Acid-alkali titration
Acid-base titration. Indicator used is Phenolphthalein which turns from pink (in alkali) to colourless (in acid).
Acid-carbonate reaction: carbon dioxide test
This experiment comprises the carbon dioxide test - using limewater (calcium hydroxide).
Acid-carbonate reaction
Reaction between an acid (hydrochloric acid) and carbonate (calcium carbonate). The bubbling (effervescence) is due to the production of carbon dioxide.
Thursday, January 17, 2008
Natural Indicators - Cabbage and Tea
The above video is shown during the 2nd lesson as part of the Acids and Bases series on indicators.
Msg to Ms Quek's students
Dear 103 and 106,
This blog is set up to post the videos and interesting websites which I shared with you all during lessons. Feel free to leave a comment too! :)
Cheers,
Ms Quek
This blog is set up to post the videos and interesting websites which I shared with you all during lessons. Feel free to leave a comment too! :)
Cheers,
Ms Quek
Subscribe to:
Posts (Atom)