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... Sodium thiosulphate Time to see how long the cross takes to disappear completely Repeat 3 times Rinse and repeat to the heat 5 º over the last temperature. Safety A pair of goggles will be worn during the heating part of the experiment in order to protect the eyes. When handling hot beakers and measuring cylinders a pair of tongs will be used. A gauze and heatproof mat will be used while heating to avoid any damage to the equipment. Recording 3 times In a table Fair Test In order for my results to be valid the experiment must be a fair one. I will use the same judgement each time for trying to see when the X has disappeared.
Approximate Word count = 479
Approximate Pages = 1.9
(250 words per page double spaced)
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