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Why is it so important to control variables in an experiment?
You need to control variables in an experiment so as to make sure that only the variable you are testing and changing is the one affecting the results of your experiment. For example, in an experiment to find the effect of light intensity on the rate of photosynthesis of plant, you'll change light by putting a plant in sun and another in dark but you must not change carbon dioxide level for both plants so by that you have controlled other variables in the experiment(variables which must be the same always in the experiment).
What is a wooden splint that is used in an experiment?
A wooden splint that is used in an experiment is set on fire and held over a container of gas. The color of flame and amount of popping that the woodne splint does will tell you what type of gas is in the container. They test for different gaseous presences. Usually for oxygen, carbon dioxide or hydrogen.
What is the abstract of an exploding Ziploc Experiment?
The exploding Ziploc experiment demonstrates the rapid expansion of gases and the effects of pressure. In this experiment, a sealed Ziploc bag filled with a chemical reaction, such as baking soda and vinegar, creates carbon dioxide gas. As the gas accumulates, pressure builds until the bag bursts, providing a visual representation of gas laws and the principles of chemical reactions. This experiment illustrates concepts like gas expansion and pressure dynamics in a fun and engaging way.
What was the living tree experiment?
The "living tree" experiment was a scientific study performed originally by Jan Baptiste van Helmont (1580-1644) and thereafter repeated by several other scientists in the decades and centuries following. Van Helmont measures the weight of the tree at the start of the experiment (five pounds) as well as the weight of the soil (200 pounds). After five years of regularly watering the tree, van Helmont noted that the soil only lost about 2 ounces of weight while the tree weighed an astonishing 164 pounds. He concluded that because the tree did not gain all this weight from the soil, it must have gained it from the water intake. Although we now know that plants gain much of their mass from photosynthesis/carbon dioxide as well as soil, van Helmont's experiment has been lauded as an early example of strict attention to detail and experimental controls.
What experiment did John Dalton do?
John Dalton carried out various experiments of gases to find out their relationship. For example, he experimented with oxygen and nitric oxide. He created a reaction in them for producing a third gas called nitrogen dioxide.
What is potassium hydroxide used for in an experiment to demonstrate that carbon dioxide is produced by green plants during respiration?
Potassium hydroxide is used to absorb carbon dioxide produced by the green plant during respiration. By placing the potassium hydroxide in the experimental setup, any carbon dioxide released will be absorbed, preventing it from affecting the results of the experiment. This allows for the accurate measurement of how much carbon dioxide is produced by the plant during respiration.
The gas produced during your lab experiment was?
The gas produced during the lab experiment was carbon dioxide (CO2).
An experiment requires 6 molecules of carbon dioxide and 3 molecules of water How many different compounds are required in the experiment?
If your question is correct: the carbon dioxide is the first compound and the water is the second compound.
What is the function of lime water used in testing for carbon dioxide gas?
It is to make sure that carbon dioxide is present or not present in the experiment.
Why did PH change during the light experiment?
Because the Photosynthesis added carbon dioxide to the water
How do you conduct an experiment on what makes soda pop fizz?
To conduct an experiment on what makes soda pop fizz one needs a cork, carbonated drink and carbon dioxide. When the carbonated drink is sealed in the bottled together with the carbon dioxide and opened the soda will fizz.
Why was it necessary to degas the sodas prior to the experiment?
It was necessary to degas the sodas prior to the experiment to remove any dissolved gases, such as carbon dioxide, in order to prevent interference with the results of the experiment. Presence of dissolved gases can affect the accuracy of the measurements taken during the experiment.
What happens to limewater at the end of an experiment?
At the end of an experiment, limewater will turn cloudy if carbon dioxide was present in the environment, causing it to react with the calcium hydroxide in limewater to form calcium carbonate, which is insoluble and appears as a white precipitate. If there was no carbon dioxide present, limewater will remain clear.
What happens to all oxygen molecules that originated from carbon dioxide in the van niel experiment?
In the van Niel experiment, the oxygen molecules that originated from carbon dioxide are released as byproducts during the process of photosynthesis. These oxygen molecules are a result of splitting water molecules to produce molecular oxygen (O2) while converting carbon dioxide into carbohydrates.
What is the foam floating on top of the vinegar after the eggshell experiment?
The carbonate turns into carbon dioxide, you're looking at the carbon dioxide when you try this at home, it's the bubbles that form on the egg.
What happens in the coke and salt experiment?
Salt crystals are nucleation centers for carbon dioxide and this gas is violently evolved.
What effect does sweetener on carbon dioxide production in a yeast balloon experiment?
Using a sweetener in a yeast balloon experiment may impact carbon dioxide production. Sweeteners can provide additional food for the yeast, potentially increasing fermentation activity and resulting in more carbon dioxide production. However, the specific effect would depend on the type and concentration of sweetener used.
