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Science Experiments

Experiments often conducted by students to test different scientific theories and hypotheses

11,111 Questions

IS road salt edible?

no because it has different chemicals in it

Is dropping water on Lincoln side of penny a valid experiment?

Not really, the better expiriment would be if you used both sides of t he penny and compare all of your trials.

How do you stop hellium escapin from a balloon what causes hellium to escape from a balloon?

a particle of hellium is small enough to fit in between the molecules of latex (or whatever the balloon is made of) and eventually leaks out due to diffusion. If the environment the balloon is in has the same amount of hellium in it as the balloon, it won't deflate.

Is tea a natural indicator?

Yes. However, certain teas cannot be used. One tea which does work is black tea, which gets darker when a base is added and lighter when an acid in added.

What is contained in liquid plant food?

In Liquid Plant Food there is Nitrogen, Phosphate, Potassium [potash], iron, manganese, zinc and more.

What safety rules should be followed in a science laboratory when wafting an unknown substance?

When wafting an unknown substance, it is extremely important to not take in a direct whiff. You need to breathe in only enough to get your sense of smell going. If you breathe in too much, you run the risk of severely harming yourself.

What is the subject in an experiment?

It is the thing you conduct your experiment on.

What are three non examples of mater?

light is not mater Mater is a combination of atoms of a particular type which are similar and have the ability to join with each other thus forming mater on the other hand non mater is is those atoms which may be similar but are unable to join or combine. 95% of the universe is filled with non mater that can not be percieved by human form and ability. All the sub atomic particles in any atom are not mater but have a specific purpose for being there. .

Branches of earth science and definition?

The branches of earth science are so many and they have various roles. Some of them include geology which deals with land formations, oceanology which deals with oceans, meteorology which deal with weather and climate and so many more.

What does Gravity have to do with hot air rising?

The density of air changes with change of temperature, therefore changing it's mass. In other words, the molecules that make up the composition of air move farther apart with a rise in temp and, of course, just the opposite with a decrease in temp. Since temperature changes the mass of air, gravitational pull from the earth will change proportionately.

Who said electrons are found in electron clouds not paths?

Bohr

^ wrong. Werner Heisenberg/ Erwin Shrodinger did.

So who did, Bohr or Schrodinger and Heisenberg?

What did Alphonse Bertillon do?

Alphonse Bertillon created anthropometry- which is the measuring of an individual for the purposes of understanding physical variation. He brought to light ear identification and ear print identification in 1879.

What is the difference between pure ans mixed matter?

the difference is that the substances is aparent only on the atomic or molecular level.

Is ripening of fruit a physical change?

Ripening is a chemical process.
Ripening involve many chemical reactions.

What was Henry Moseley's experiment?

In 1913, by using x-ray spectra obtained by diffraction in crystals, he found a systematic relation between wavelength and atomic number, Moseley's law.

Why dont you weigh a solution dispensed at the beginning of an experiment?

Technically, as long as you record the volume of the solution and are sure of the concentration, you could extrapolate the weight.

What factors can be changed in an experiment?

independent variables are the ones you change (how much watter to give the plant)

dependent variables are the result (how tall the plant is)

constant variables are ones that don't change (the type of plant)