Wednesday, 19 August 2015

Science week 5

WAL about the rate of reactions and the products of reactions.
This week in science with Mrs Stead we looked at certain chemicals and how they reacted. The first test we did we had two cups, Detergent, Baking Soda and vinegar. First we put one teaspoon of baking soda into each cup. Then we put detergent in one cup and left the other. Afterwards we took two tablespoons of vinegar and put in one cup and died the same for the other. The results were mixed, the one with detergent had small bubbles, grew slower and popped slower. Then we did an experiment with balloons. First we filled the balloon with one teaspoon of citric acid and another teaspoon of baking soda. Then we attached it to a bottle fill with water. Finally we tipped the balloon upright. The water and the powders made carbon dioxide which made the balloon fill with air like a regular balloon would. The final experiment we did was the jumping raisin experiment. First we put in some water. Afterwards we put in the raisins. Finally we put some vinegar in the cup. The raisins jumped up and down due to the carbon dioxide connecting to the bubbles (lifting it up) when the bubbles popped the raisins went down.

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