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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What happened when impurity is added in phenol water system?
the critical solution temperature for phenol water system increases
How do you separate salt and sand without filter paper?
In order to separate sand and salt without filter paper you need to place mixture in container with an excess of water. You use an excess of the solvent so that you decant the salt water with a pipette or what ever you are using. Remember you will want to stir the mixture so salt goes into solution. You can repeat adding water to your liking and removing more salt water and then dry the sand.
Is nigrosine repelled by negative charges in bacteria?
Yes. It is a negative stain and so therefore repels and is repelled by other negative charges.
Is gas a fixed shape or can it change?
Well, look around. You are in 'air', the most natural gas, though not visible but you can feel it when it moves around you, that's called wind.
Do really you think that if it would keep it shape or form, that you could feel the wind blow from every direction? How can wind come from another side, come around the corner of that big building? Would that be possible if it were as 'fixed' as concrete?
Why do some foam cubes get smaller in a syringe and some stay the same size?
lalalalala i have no idea XD
What are the elements present in water?
Water is composed of may molecules each of which is made up of two hydrogen (H) atoms and one oxygen (O) atom, giving the formula H2O.
TRUE!!!
What are the strengths and weaknesses in the use of experiment?
Experimentation is the second most important tool in science. Examination is the first.
However, there is an aspect of experimentation that must always be carefully considered, and that is Empiricalmethod. Empiricism means that through scientific process and observation, others might come to the same well-thought-out conclusion, and thus a Theory may become a Law.
On the other hand, a poorly conceived experiment, or shoddy methods are the very opposite of good science. Because, science should always follow what is true and can be proven, regardless of what your preconceived notions or hypotheses might be.
It would increase heart rate and breathing
What does feedstock for chemicals mean?
Feed stock is what livestock such as cows, goats, sheep, and horses are fed. There are chemicals in the feed which help give them the nutrients they need. They are usually found at feed stores.
If you have multiple uncontrolled variables, you can't tell which one (or which combination) is causing the change. For example, if you put four different random chemicals in milk and it exploded, you wouldn't know which of the four chemicals makes milk explode, or if it takes a combination of those four chemicals to cause the explosion.
Why did Wilhelm roentgen repeat his experiment before describing his results to others?
He repeated his experiment because he wanted to make sure that it worked perfectly before describing the results to others.
Testing that is done online, as opposed to a classroom or other real-life structure.
Why can you see a basketball even though it doesnt produce its own light?
Light bounces off of the ball and into your eyes.
The pitch period of a signal is the fundamental period of the signal, or in other words, the time interval on which the signal repeats itself.
The pitch frequency is the inverse of the pitch period, which is the fundamental frequency of the signal.
What is an abiotic factor that can be found in a rain forest ecosystem?
The correct answer is Oxygen, otherwise air. (APEX)
How does distilled water affect the action of enzymes in the body?
distilled water tastes better then other types of water and its very good for plants.
id say it gives you more energy and is better. to much unfiltered water could hurt your body.
