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4 Cards in this Set
- Front
- Back
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What happens during a onion microscope practical? |
- peel of a thin layer of a onion - put two drops of iodine solution onto the onion and then slip the onion into the slide and place it under the microscope - you have to look through the eyepiece and then use the right maginafiction and then focus it right on the onion |
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What are the pondweed practical? |
- The pondweed produces bubbles of oxygen gas when they photosynthsis. These bubbles can be counted to see the rate of photosynthesis. - The pondweed is put in a sodium hydrogen carbonate solution |
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The effect of osmosis practical? |
- pototes tissue are cut into equal sized cylinders and it is left overnight with different concentration of sugar solutions and distilled water -the change sin length and masses can be shown accurately - theses things has to stay the same room temp, type of potato, starting length of potato, the volume of liquid |
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What happens in the pure dry copper sulfate crystals experiment? |
-warm acid gently and add copper oxide slowly -when no copper oxide dissolves then an excess has been added (you will see Black bits in the bottom of the beaker ) -filter the solution to remove the excess, the filtrate will be left in the bottom of the colonial flask - heat the solution over a water bath to evaporate the water and cause it to crystallize -carry on heating until they are dry |
