The second controlled chemical reaction

Ok, so you made your students work last week, asking them what could the first controlled chemical reaction by mankind have been? (it was fire). So this week, ask them 'What was the second chemical reaction to be controlled by mankind?' You may find that some of your students guess to 'the first controlled chemical reaction' are actually the answer to this. As last week, I will post the answer on Friday. In the meantime, feel free to post your answers! By the ...

The First Controlled Chemical Reaction – The answer is…

So, What was the first controlled chemical reaction? Well, the answer is .... .. Fire - of course, I hear you say. By Fir0002 [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia CommonsDid that wake up your students for the start of term? :mrgreen:

The First Controlled Chemical Reaction

  It's the start of a new year and the start of a term. Will your students return to school fired up  and ready to go or slow and lethargic? What better way to get your classes thinking than posing them a challenge. So, ask them this: "What was the first controlled chemical reaction?"   Answers by Friday please (I have tried googling this as well - it doesn't work!). Oh, and the diagram is misleading as well! Image kindly reproduced according to the licence at: http://en.wikipedia.org/wiki/File:Chemical_precipitation_diagram.svg

Toxic Sludge

  What have Iron Oxide, Aluminium Oxide, Silicon Dioxide, Titanium Dioxide and Sodium Oxide all got in common? Well, they were the substances found in the highest concentrations in the recent toxic sludge spill in Hungary. What effect will they have? It seems open to debate at ther moment but you can read more here: http://www.bbc.co.uk/news/world-europe-11492387

Energy on the Moon?

  Lets make an assumption (a dangerous thing, I know!). Man has built a Moon base. Where will the power come from?   Transporting fuel to the moon is not cost effective. Solar panels? Well, they need to be transported there as well and a lunar night lasts fourteen days! How about….. A thermo-chemical storage solution? The moons surface has plenty of calcium oxide. This could be combined with water to make calcium hydroxide. CaO + H2O ⇆ Ca (OH)2 The standard enthalpy change for this reaction ...

Solid – Solid Phase Reactions

  Most of the reactions we carry out in the lab involve a liquid reacting with another liquid, a liquid reacting with a solid or a solid reacting with a gas. There are no solid - solid reactions. Why? (You can post your reasons below) - if you cannot think of any please contact me!   The following clip shows that solid - solid reactions do occur and they can be quite vigorous! The reaction of Iodine and Aluminium N5h5ohd8298 Can you think of any reasons ...