Reversible Reactions

What are endothermic and endothermic reactions? Can you explain? Can you give examples of these reactions? You need to do this for your BTEC assignment. You should have also written up your experiment.

sodium chloride

Originally uploaded by griggans

we burnt some sodium in some chlorine gas. They are very reactive together and make a bright light – sodium chloride is left behind (common salt)

Here is the link to the homework on smoking and drugs. You may need your password, which is on the board. Make sure this is done by friday please.

words you should know: medicinal, recreational, addictive, withdrawal symptom, hallucinogen, stimulant, depressant, performance enhancer, painkiller

http://www.bbc.co.uk/schools/gcsebitesize/science/ocr_gateway/ourselves/4_drugs_and_you1.shtml

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