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Year 8 chemical changes
Posted: 17 May 2016, 11:14
by linotas
Anyone know any "exciting" pracs or demo's for year 8 chemistry? Besides Elephants toothpaste that is.
Re: Year 8 chemical changes
Posted: 17 May 2016, 14:27
by smeee
Energy from a Cheezel ??
Re: Year 8 chemical changes
Posted: 18 May 2016, 14:36
by sunray18
Take care doing chips and cheezels - one of our teachers investigated this prac and found that they give off dioxin when burnt.. we do not do it any more.. but don't take my word for it - do some research yourself
Re: Year 8 chemical changes
Posted: 18 May 2016, 15:55
by tuesday
Neutralization Reaction-Sherbet
Spontaneous combustion-demo only
Re: Year 8 chemical changes
Posted: 19 May 2016, 08:44
by AnnNos
Mixing methylated spirits with water, soaking a handkerchief or cloth and then setting it alight. They are always amazed that the cloth doesn't burn.
Re: Year 8 chemical changes
Posted: 19 May 2016, 10:29
by rae
steel wool in copper sulphate,
There is a fantastic golden rain precipitation demo you can do using lead nitrate and potassium iodide.
http://www.rsc.org/eic/2014/12/golden-r ... onstration
Heating copper carbonate in a test tube and it goes black.
Re: Year 8 chemical changes
Posted: 26 May 2016, 09:40
by curie
sunray18 wrote:Take care doing chips and cheezels - one of our teachers investigated this prac and found that they give off dioxin when burnt.. we do not do it any more.. but don't take my word for it - do some research yourself
Teacher just tried to order this through email. I'll let her know that bit of info.