In this experiment, we will look at the concentration of sodium bicarbonate in the light reaction of photosynthesis. This will be carried out using three different colored filters to identify the effect on the light reaction of photosynthesis. Since, photosynthesis is the process whereby light energy is captured by plant, algal, or bacterial cells and is used to synthesize organic molecules from carbon dioxide and water. Although, photosynthesis is atmospheric carbon dioxide is removed and transformed into oxygen and carbohydrates. Elodea is an aquatic plant of a genus that includes the ornamental waterweeds. Sodium bicarbonate is commonly known as baking soda. On the other hand, there are four primary photosynthetic pigments found in the chloroplast …show more content…
Then selected one sprig of Elodea approximated 5cm in length. While the Elodea leave should be fresh. Then we placed the sprig elodea upside down in the test tube. We were submerged the Elodea leave completely in the sodium bicarbonate. After that, we obtain the light source and placed the container of water in front of the light to prevent overheating the Elodea. Then we were attached each of colored filter to the container. Also, placed the test tube in a rack at 25cm from the light source. After that we allowed the light to shine on the test tube for five minute to allow for bubbles to appear regularly. Then we counted the number of bubbles produced by the Elodea each minute in a five minutes interval, and recorded total bubbles after each minute. Which is total bubbles after minute two is the number of bubbles that we recorded during minute one plus the number of bubbles we recorded in minute two. You are very welcome to see recorded data in table 1.
Results:
Table 1 Effect of different colored light on photosynthesis.
Name of pigment Distance from light (cm) Total bubbles after minute 1 Total bubbles after minute 2 Total bubbles after minute 3 Total bubbles after four minute 4 Total bubbles after minute 5 red 25cm 5 6 7 9 10 blue 25cm 8 11 13 15
The question I was trying to answer is Which balanced chemical equation best represents the thermal decomposition of sodium bicarbonate. Using that question to guide us we were trying to determine which of the four chemical equations show how atoms are rearranged during thermal decomposition. We concluded it was the second chemical equation, we know that because:
Elodea also known as Elodea canadensis is a genus of aquatic plants. They are also called waterweeds and is mainly used in aquarium vegetation. It plays a significant role in aquatic vegetation as it produces a significant amount of carbon dioxide under the perfect conditions. Elodea mainly grows in shallow water and can also be sometimes found in deep water. The plant for this experiment is kept in a water tank. We use elodea for this experiment as this is a very good plant that play a crucial part in our experiment. The amount of carbon dioxide produced by the plant during the experiment can be used to understand the rate of the reaction.
The Effect of Light on the Organic Plant Elodea Aim: To calculate the rate of photosynthesis from the number of oxygen bubbles produced by the plant. Photosynthesis: The process by which green plants use the sun's energy to build up carbohydrate reserves. Plants make their own organic food such as starch. Plants need Carbon dioxide, water, light and chlorophyll in order to make food; and starch and oxygen are produced. Carbon dioxide and water are the raw materials of photosynthesis.
I added ½ tablespoon of baking soda to 4 cups of water. I added a small drop of liquid soap to the water and stirred to mix. I used the end of a straw and cut out 20 circles of spinach leaves. I pulled the plunger completely out of the syringe and put the leaf circles into the syringe. Next I pushed the plunger back in. I used the syringe to suck up the baking soda water until the syringe was about ¼ full of liquid. I placed my finger over the end of the syringe and pulled back on the plunger as far as I could without pulling the plunger out. I repeated this step three times. All the leaf circles sunk to the bottom of the liquid. I placed the spinach into a clear glass with about 2 inches of baking soda solution. I blocked out all light. I set the lamp with a compact florescent light bulb. I placed the glass in front of the lamp. I counted the number of circles that floated after each minute for 20 minutes (positive control). I created a negative control by not placing compact florescent light bulb and not placing the glass in front of the lamp. I counted the number of circles that are floating. I repeated the experiment with fresh circles and used regular water plus soap for all steps instead of baking soda and soa...
= > [CH2O} + O2 + H2O, This shows that when the light intensity is increased the rate of reaction will be more quicker he only anomalous result there was, is the one in the 100 watt result the reading after 5 minutes is anomalous because it does not follow the predicted pattern of increasing in the production of gas because it is lower I know from my own knowledge of photosynthesise that when the light intensity is increased the rate of reaction will be more quicker because many plants and trees photosynthesise quicker in stronger light and photosynthesise slower in dimly lit places. The chlorophyll absorbs light energy and enables it to be used by the plant for building up sugar. The overall effect is that energy is transferred from sunlight to sugar molecules.
The Effect of Wavelength on Photosynthesis Rate Aim: To be able to To investigate how different wavelengths (colors) of light affect the photosynthetic rate of the synthetic. I will use a pant that is a pond weed called elodea. I will measure the rate of photosynthesis by measuring the amount of o2 given off in bubbles per minute from the elodea. I will do this by placing the Elodea in a test tube with sodium hydrogen. carbonate then I will vary the light wavelength (color) using colored.
The experiment is aimed at giving a better understatement of osmosis process and the different conditions in which osmosis occurs.
Two electrical wires * Stopwatch * Thermometer Method I put a piece of Elodea Canadensis (pond weed) in a test tube and covered it with water. The test tube was then placed in a beaker with a thermometer so that the water stayed the same temperature, this was then placed in a cardboard box with a bulb attached to a voltmeter by the electrical wires so that I could concentrate how much light the plant got. I varied the voltage (intensity) of the bulb and counted how many bubbles of oxygen were created at each voltage in one minute. I tested each voltage three times for accuracy for a minute each time. Results Preliminary Experiment Amount of bubbles Light intensity (lux)
I prepared two large test tubes, each should have an inch of KOH pellets on the bottom of the tube. Next, a cotton ball is placed in each of the two test tubes above the KOH to plug the tube. Now one tube is filled to the top with peas, the peas are then removed and weighed to the nearest.1 grams, this is the experimental tube. The control tube is filled with plastic balls to the same height as the experimental tube. Next, a rubber stopper with attached capillary tubing is inserted in each test tube.
“Photosynthesis (literally, “synthesis from light”) is a metabolic process by which the energy of sunlight is captured and used to convert carbon dioxide (CO2) and water (H2O) into carbohydrates (which is represented as a six-carbon sugar, C6H12O6) and oxygen gas (O2)” (BioPortal, n.d., p. 190).
Neutralization Experiment AIM:- To investigate how heat is given out in neutralizing sodium hydroxide (NaOH) using different concentrations of Hydrochloric Acid. Background Information:- Substances that neutralize acids are called alkalis. An acid is a substance that forms hydrogen ions (H+ ) when placed in water. It can also be described as a proton donor as it provides H+ ions. An example of an acid is hydrochloric acid (HCl), Sulphuric acid (H2SO4) etc.
Photosynthetic pigments are essential for life because they allow photosynthesis to occur by capturing sunlight which is then used alongside carbon dioxide and water to form organic compounds such as glucose and oxygen. The pigments allow the conversion of light energy to chemical energy which other organisms can benefit from. Oxygen is utilised by other organisms in aerobic respiration. The different pigments present in the chloroplasts allow a wide variety of wavelengths of light to be absorbed for efficient photosynthesis and provide colours to the plant to attract pollinators.
Photosynthesis is a process in plants that converts light energy into chemical energy, which is stored in bonds of sugar. The process occurs in the chloroplasts, using chlorophyll. Photosynthesis takes place in green leaves. Glucose is made from the raw materials, carbon dioxide, water, light energy and oxygen is given off as a waste product. In these light-dependent reactions, energy is used to split electrons from suitable substances such as water, producing oxygen. In plants, sugars are produced by a later sequence of light-independent reactions called th...
Photosynthesis is a process in which plants and other organisms convert the light energy from the sun or any other source into chemical energy that can be released to fuel an organism’s activities. During this reaction, carbon dioxide and water are converted into glucose and oxygen. This process takes place in leaf cells which contain chloroplasts and the reaction requires light energy from the sun, which is absorbed by a green substance called chlorophyll. The plants absorb the water through their roots from the earth and carbon dioxide through their leaves.
the distance from the light source to the plant. Output - The rate of photosynthesis is to be measured by counting the bubbles of oxygen produced by the plant every two minutes, and therefore finding the rate of photosynthesis. Control - The amount of water available to the Elodea will stay the same. same level as the 400 cm3 beaker. The colour of the lamp will stay the same (yellow) as to plants Chlorophyll easily absorbs blue light.