WELCOME

INTRODUCING

STUDENTS ARE GOING TO INTRODUCE THEMSELVES, THEIR SCHOOL AND THEIR COUNTRY.

1st step

Part 1 PEOPLE AND CHEMISTRY
INTRODUCE THE TOPIC
■ Do you have any chemicals/chemical products in your home?
■ What chemicals/chemical products do you have in your home?

2nd step

Part 2 CHEMISTRY IN OUR HOMES



In Parts 1 and 2 students find out more about the many
chemical products which people use in their homes. They also
examine the labelling of these products and learn about the
international symbols for labelling chemical substances.
They have an opportunity to make and test a chemical
product

STEP 3 LIVING WITH CHEMISTRY

STEP 3 LIVING WITH CHEMISTRY
Research by interview, or from secondary sources, to investigate a local story related to chemistry and to discover an example of the importance of chemistry to the local, regional or national economy.

giovedì 23 aprile 2009



SHAMPOO:
The most common ingredient in shampoos is known as straight-chain alkyl benzene sulfonates. An example is Ammonium Lauryl Sulfate, or its sodium relative, or the slightly larger related molecule ammonium lauryl ether sulfate, sometimes abbreviated as ammonium laureth sulfate.







DEODORANT:
Natural mineral, Salts, Ammonium alum









SOAP:
Today, soaps are made from fats and oils that react with lye (sodium hydroxide). Solid fats like coconut oil, palm oil, tallow (rendered beef fat), or lard (rendered pork fat), are used to form bars of soap that stay hard and resist dissolving in the water left in the soap dish.













TOOTH-PASTE:

Phospate of fluorine, NaF




DETERGENT:
Detergents are cleansing products that may include bar
soaps and liquid gels for cleaning the hands, face or body; detergent powders or cakes for laundry cleaning purposes;
SHOWER GEL:
Emmolients, citric acid, fresh fruits , aloe,
humectants etc..

















AMMONIA:
NH3











DETERSIVE:
Surface-active, anion , phosphate and perfume







WHASING UP LIQUID:Acids, alcohol etc..

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