Colored light

Grade 7 is working with salts and experimented today with colors when various salts, such as lithium chloride are on fire. To start fire we used methanol.

Beautiful!

Magic

Today we made a fun and magical experiment. We tried it last week but did not succeed very well, but after some expert advice from Hans Persson we dared to try again. Shame not to give up! 

What did we do?

Patrick poured baking soda and vinegar in a jug.

Paulina "poured" over a glass. No liquid may come down. Hocus pocus!

Then Johan turns out the light with "nothing".

http://www.youtube.com/watch?v=g3HoLCiMZC0

Acid rain

Today we talked about how acid rain occurs and what the effects of the wild are and what we can do to improve the environment in the future. We made a small scene to show how acid rain arises and ends up in lakes and forests. 

We also did a theater of this, where Johan talks about how acid rain is formed and ends up in lakes. Emils mission was to save the lake and so he did by pouring chalk into the lake, to set up a bass. "Save the Lake" is what Hans Persson called the exercise in his book "Experiments with chemistry." 


A super fun conclusion to the lesson and no one will forget what acid rain does:)


http://www.youtube.com/watch?v=awOiG8QWn3U&feature=player_embedded#

Chemical symbols

We looked at the new chemical symbols in Europe from 2010. We compared with the old symbols and talked about each symbol. Then the students made those symbol. They were super nice! 

Joanna's fearsome symbol of toxic.