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This is our seventh lab lesson. Mrs Chu taught us about solute and solvent. A solute is a substance which dissolves in a liquid. A solvent is a liquid that dissolves in a substance. After that, we conducted an experiment. We have to burn a magnesium ribbon over a flame and record the observations. We saw a white dazzling light. The ash is white in colour. Mrs Chu also taught us that a new substance is formed if an element or compound changes its physical appearance through chemical reactions like burning. I feel that the experiment is fun and look forward for more experiments.
Week Eight Today===Today is our
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to access them.Termthem.
Term OneTerm Three Three===
This is our seventh lab lesson. Mrs Chu taught us about solute and solvent. A solute is a substance which dissolves in a liquid. A solvent is a liquid that dissolves in a substance. After that, we conducted an experiment. We have to burn a magnesium ribbon over a flame and record the observations. We saw a white dazzling light. The ash is white in colour. Mrs Chu also taught us that a new substance is formed if an element or compound changes its physical appearance through chemical reactions like burning. I feel that the experiment is fun and look forward for more experiments.
Week Eight
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another page. Click the links below to access them.Term OneTerm Three
Week Four
This is the fourth lab lesson. I did the experiment alone as my partner wanted to do with another person. I extracted chlorophyll from leaves and a test for starch. I used a variegated leaf to test for starch at the white portion and green portion. Firstly I place the leaf in the boiling water for 10 minutes to brak the cell structure in the leaf and to stop all chemical reactions taking place and make the leaf more permeable to the iodine solution. Next, i will turn off the heat source to place the leaf in 20ml of methylated spirits in a boiling tube. The leaf will be decolourised. I removed the leaf and add a few drops of iodine to did. The parts that turned blue is the part which contains starch. I concluded that chlorophyll is needed for the plant to make food. It was a fun filled experience conducting the experiment alone.
NOTE) TERM ONE & THREE IS ON ANOTHER PAGE...
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Term One
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