Rates of Reaction

 #Chemistry Using a @pascoscientific colorimeter to determine the rate of reaction of Sodium Thiosulfate and HCl Some excellent rate graphs produced #iteachchemistry #STEM #Science

Kipps Apparatus

 #GCSE #Chemistry setting up a couple of Kipps apparatus. One to make hydrogen and the other to take apart and explain how it works to the students - Such a cool piece of equipment #STEM #Science #iteachchemistry

To Make Hydrogen, Acid is poured in the top and it makes its way through a tube to the bottom tank which gradually fills up. The middle tank has some zinc metal in it which will react with the acid to form hydrogen and will come out of the middle gas tap as the acid enters the middle tank and reacts with the acid. Now the clever bit. When the gas tap is turned off the pressure increases, the acid is pushed down into the bottom tank and up into the top tank. No acid touches the zinc so the reaction stops. When you need more hydrogen the gas tap is opened, releasing the pressure and the acid level rises again and touches the zinc and the reaction starts all over again.

The Kipps apparatus is very versatile making several different gases, not not used much as it is more convenient to buy a cylinder. Now this may be true but nothing like so cool.

Pressure and Temperature

 Pressure and Temperature #GCSE #Physics Some hands on practical making a difference to learning. #iteachphysics #STEM #Science As the temperature increases so does the pressure

Heart dissection

 Getting ready for a heart dissection. #Biology I feel it is so important that the students what the real structures are like rather than just looking in books. #iteachbiolgy @chatbiology #STEM #Science

Twists in a string

 Looking at how twisting a string increases its strength #ALevel #Physics Compared straight and twisted fibres. Amazing difference. #iteachphysics #STEM #Science

Home Made Cyclotron

#ALevel #Physics My homemade cyclotron. Not quite as fast as the real thing, made from a clear mixing bowl, some copper conductivity tape Alt +positive and -negative and a Van der Graaff generator, with a graphite covered ping pong ball #STEM #Science #itechphysics

 

Crookes Radiometer

 Crookes Radiometer getting an airing as the sun pops out from behind the clouds.