Igcse chemistry paper 6. Cambridge IGCSE Chemistry Paper 6 (Alternative to Practical) Marking » Skolatis 2022-10-26
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Photosynthesis is the process by which plants, algae, and certain bacteria use sunlight to convert carbon dioxide and water into glucose and oxygen. This process is essential for the survival of plants and is the primary source of energy for most living organisms. In this lab, we will be using floating discs to investigate the role of light in photosynthesis.
To begin the lab, you will need to gather a few materials, including a light source, floating discs, and a test tube. You will also need a steady hand and good eyesight to accurately measure and record your observations.
To set up the experiment, start by filling the test tube with water and adding a small amount of baking soda. This will create a basic solution, which is necessary for the floating discs to remain buoyant. Next, place the floating discs in the test tube and position the light source so that it is shining directly on the discs.
Once the experiment is set up, it is time to begin collecting data. Observe the floating discs over a period of time, taking note of any changes in color or movement. You may also want to measure the oxygen levels in the test tube using a dissolved oxygen meter.
As the light source shines on the floating discs, the chloroplasts within the discs will absorb the energy from the light and use it to power the process of photosynthesis. This will result in the production of glucose and oxygen, which will cause the discs to change color and move more actively within the test tube.
In conclusion, the floating discs photosynthesis lab is a simple and effective way to investigate the role of light in photosynthesis. By observing the changes in the floating discs over time, you can gain a better understanding of how plants and other photosynthesizing organisms use sunlight to produce energy.
IGCSE Chemistry Paper 6 ATP Flashcards
Alvin Fujito Indonesia I thank IGCSE Centre for their assistance in my 2015 IGCSE exam. To test for conductivity, include a sample of the substance in a circuit that contains a source of direct current eg a cell or power pack and a bulb or an ammeter. The timer was started and the volume of gas collected in the measuring cylinder was measured every 30 seconds for three minutes. . It is worth every penny spent. There are there tests. Whether you get the metal or hydrogen during electrolysis depends on the position of the metal in the reactivity series: the metal will be produced if it is less reactive than hydrogen hydrogen will be produced if the metal is more reactive than hydrogen SEE REACTIVITY SERIES.
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Indicate clearly which line represents Experiment 1 and which line represents Experiment 2. . . This wouldn't have been possible without your endless support. Thank you so much!! There are so many things I never knew and was being taught in the course. Fatim Egypt Hello IGCSE Centre, I wanted to thank you from the core of my heart for not just supporting me, but also other students who are in need of these amazing classes!! Thank you to those wonderful teachers behind the screen, for providing your support with every step of the way, by putting together those intriguing presentations and videos. .
Cambridge IGCSE Chemistry 0620/61 Mark Scheme May/Jun 2019
The solution was divided into four test-tubes and the following tests were carried out. Haneea Yasir Dear IGCSE Team, thank you for all the help on this website and the revision classes. It's really recommended and very helpful! To be an electrolyte, a substance must be able to conduct electricity. My daughter Nawal Amir completed her english revision course with igcse center. Show clearly on the graph how you worked out your answer.
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How could you show that a solution of benzoic acid is a weak acid? Experiment 2 Experiment 1 was repeated using 50cm of dilute acid Y. Two further tests are carried out and the following observations made. The gas is more dense than air. Two experiments were carried out. E was an aluminium salt. You can add a metal, in which hydrogen is produced with sulphuric acid, but no change in sodium sulphate. Electrolysing aqueous solutions of ionic compounds can be more complicated than electrolysing molten compounds because the water molecules can provide hydrogen ions and hydroxide ions.
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Cambridge IGCSE Chemistry Paper 6 (Alternative to Practical) Marking » Skolatis
Finally you could use an indicator like litmus paper, it will change to red with sulphuric acid but there will be no change with sodium sulphate. Thank you to those wonderful teachers behind the screen, for providing your support with every step of the way, by putting together those intriguing presentations and videos. They're very professional in handling this. Continue the good work, IGCSE Team. There are three tests, you can use a metal carbonate in which carbon dioxide will be produced with sulphuric acid but there'd will be no change with sodium sulphate. I really suggest those like me who didn't learn enough IGCSE at school, to join this course.
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