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Hot Ice Experiment

Physical Science Coursework 2011

Samuel Seow

on 12 July 2011

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Transcript of Hot Ice Experiment

Year 1 Integrated Programme Physical Science Coursework 2011 Topic Chosen Chemistry Magic What is Hot Ice? Hot Ice is the hygroscopic crystalline sodium salt C 2 H 3 NaO 2 of acetic acid used chiefly in organic synthesis and photography and as a mordant or as an analytical reagent. http://dictionary.reference.com/browse/sodium+acetate Materials needed: 70g of Baking Soda
1 litre of household vinegar
a small Plastic Container with lid
a bigger plastic container
cooking pot
Ice water and Ice cubes
stove The Steps Step 1: Prepare the necessary materials. Step 2: Mix 70g of baking soda with 1 litre of clear vinegar. Step 3: Heat the mixture for about 1 hour or until about 10% of the mixture is left and when transparent crystals form on the surface of the mixture. Step 4: Scrape some of the crystals and put them in a separate container. Step 5: Pour the mixture into a container, cover and place it into an ‘ice bath’ for 15 minutes. Step 6: The substance is then ready. Put one of the crystal bits into the substance. These steps should produce hot ice which will freeze upon contact with the sodium acetate crystals. Hot Ice Experiment Project done by: Adhi Wibhawa Wonowidjojo Samuel Seow Wrong Procedures 1. Using bare hands to touch the mixture before the experiment is completed.
2. Using a copper pot.
3. Boiling the mixture when it is still fizzing.
4. Leaving the container uncovered.
5. Heating the mixture for too long.
6. Mix the 70g of baking soda and the 1 litre of vinegar all at once as that will cause the mixture to overflow the container. Reusing the hot ice 1. Warm the mixture over a stove or even microwave it, until it melts.
2. When in liquid form, cool it and it can be reused again. Thank you for your kind attention!
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