First experiment was on rates of reaction. We had pieces of magnesium, and we cut them up into 8, 4 and 2 pieces, leaving 1 untouched. The, we dropped those pieces into 4 test tubes with sulfuric acid. The one cut into 8 pieces reacted the fastest. As expected.
Next is separation techniques. We investigated on filtration, decanting and centrifugation. To separate sand from water, filtration is the best. The fastest is decanting, but results may be inaccurate. Filtration is the most accurate. Likewise with centrifugation, but it is time consuming.
The next 2 experiments were to do with the reactivity of compounds. We saw a lot of reaction going on, solid-solid, liquid-liquid and liquid-solid. the 5th experiment dealt with buffers. Buffers increase reactivity, so more result is obtained.
ELECTROLYSIS! The seniors placed two chemicals into a petrifying dish and out zinc and copper rods attached to a battery in the solution. Stuff was wormed around those rods. The seniors tried explaining how they were formed. Out of about 20 people, only one understood. He was not me. But, it was still the most interesting experiment, though we did not do it.
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