Year 8 chemical changes

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linotas
Posts: 659
Joined: 21 Mar 2011, 22:39
State/Location: TAS

Year 8 chemical changes

Post by linotas »

Anyone know any "exciting" pracs or demo's for year 8 chemistry? Besides Elephants toothpaste that is.
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smeee
Posts: 617
Joined: 02 Jun 2006, 10:00
Job Title: Lab Technician
School: LaSalle Catholic College
Suburb: Bankstown
State/Location: NSW

Re: Year 8 chemical changes

Post by smeee »

Energy from a Cheezel ??
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sunray18
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Joined: 14 Feb 2008, 12:30
State/Location: NSW

Re: Year 8 chemical changes

Post 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
tuesday
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Joined: 07 Apr 2009, 10:01
Job Title: Lab Tech
State/Location: ACT

Re: Year 8 chemical changes

Post by tuesday »

Neutralization Reaction-Sherbet
Spontaneous combustion-demo only
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AnnNos
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Joined: 17 Nov 2011, 07:32
Job Title: Science Assistant
State/Location: NSW

Re: Year 8 chemical changes

Post 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.
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rae
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Joined: 31 May 2006, 10:00
School: Oxley College
Suburb: Burradoo
State/Location: NSW

Re: Year 8 chemical changes

Post 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.
curie
Posts: 360
Joined: 27 May 2010, 09:42
State/Location: NSW

Re: Year 8 chemical changes

Post 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.
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