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Scientific Method

The scientific method is the basis of scientific investigation. A scientist will pose a question and formulate a hypothesis as a potential explanation or answer to the question. The hypothesis will be tested through a series of experiments. The results of the experiments will either prove or disprove the hypothesis. This category should contain questions and answers regarding the scientific method.

4,392 Questions

Could jelly be a solid and why?

Jelly is typically considered a colloidal gel, which is a type of solid with a continuous liquid phase. The solid structure in jelly is formed by the network of molecules or particles dispersed in the liquid component. So, jelly can be classified as a type of solid due to its unique gel-like properties.

Why circular rings form in michelson interferometer?

They are also formed in photography enlargers and are called, somewhat inaccurately, Newton"s rings. The explanation can be found in Newtonian physics but Light is an energy form and is not effected by gravity, except in the case of a collapsed neutron star or Black Hole! Light goes in a straight line, is not affected by Gravity.

Mechanism of azo dye Para Red synthesis?

Azo food dyes don't set off allergic reactions as such, though some azo textile dyes can cause your skin to be hypersensitive. The mechanism for why tartrazine increases allergic reactions is not yet known.

How do you separate muddy salty water?

Muddy salty water can be separated through a process called sedimentation and filtration. Allow the muddy water to sit so that the mud settles at the bottom, then pour off the clearer water. Next, filter the remaining water to remove any small particles. Finally, you can further purify the water using methods like distillation or reverse osmosis to remove the salt.

What is the method used for conducting skeels and dye experiment?

The Skeels and Dye experiment was conducted in an orphanage to study the effects of intelligence testing on children's development. The experiment involved giving intelligence tests to some children and not others, and then assessing the impact on their development over time. The results of the study suggested that intelligence testing did not have a significant impact on the children's development.

When is a syringe method preferred over the evacuated tube method?

when a patient has never blood drawn

Syringe allows more control over the amount of pressure exerted on a tiny

and/or fragile vein during a phlebotomy

a. Syringes do not contain a vacuum but are filled by pulling back on

plunger, allowing blood to flow into the barrel of the syringe

b. The force exerted on the inside of the blood vessel may be

increased or decreased by pulling plunger faster or slower

c. Therefore, the amount of pressure exerted on the inside of the vein

may be controlled by the phlebotomist

d. Phlebotomist may control rate at which blood is withdrawn &

thereby prevent a patient's veins from collapsing during blood

specimen collection

What kind of state of matter is steam?

It is a gas, assuming you are talking about dry steam. If it is wet steam, it is both a gas and a liquid.

Models are used to save time money and lives?

Models help to simulate complex systems and scenarios, providing insights that can inform decisions and lead to more efficient resource allocation. By using models, organizations can reduce costs associated with trial and error, optimize processes, and predict potential outcomes, ultimately saving time, money, and even lives by enabling better-informed decision-making.

What was galileo's new scientific method?

Some of his achievements were mathematically proving that earth and other planets orbited the sun and also improving the telescope to actually prove that theory. Now, of course he did much more, but those are just some of the things he's most known for.

What will happen if a burning splint is put into the tube of hydrogen collected?

a glowing splint in hydrogen gas will make a popping sound. this is because hydrogen is very reactive and when it comes into contact with the oxygen in the air it reacts with it and that is what you hear in the popping sound.

What keeps thing hotter plastic wrap aluminum foil or wax paper?

Aluminum foil is the best at keeping things hot because it reflects heat and acts as a barrier to prevent heat loss. Plastic wrap and wax paper are not as effective in retaining heat as aluminum foil.

Does gold and silver have low reactivity?

Yes, gold and silver are at the bottom of the reactivity chart and therefore less likely to rust when in contact with water. Iron on the other hand, is at the top of the reactivity chart and will react to water in a way so that it would rust. This is why we do not use iron, which is cheap and durable, to make coins almost anytime in history.

What is the reasons that a scientist composes a scientific paper after completing an experiment?

This allows other scientists to read the experiment. Other scientists can then perform the same or similar experiment and verify the results. If a scientist is not willing to share results then there is the possibility of the experiment and the results being discredited.

The above statement could be true. However, not complete. Why..? Although a scientist has a process or invention it is still allowed to be protected by Intellectual Proprietary Laws. Again the USA government has many classified scientific papers that have to stay classified due to the fact that releasing such data could a threat to National Security. So just because a scientific paper is not available to other scientists does not mean it's discredited.

What ingredients are used the rubbing in method?

The rubbing in method typically uses cold butter or margarine rubbed into flour to create a crumbly texture, often used in pastry or biscuit recipes. The process involves incorporating the fat into the flour by rubbing them together using your fingertips until the mixture resembles breadcrumbs.

What substances does krypton react to?

Krypton is a noble gas and is generally chemically inert, meaning it does not react with other substances under normal conditions. However, it can form compounds with highly electronegative elements, such as fluorine or oxygen, under extreme conditions like high pressure and temperature.

How is the gravitational force FG related to the distance between objects?

The gravitational force (FG) is inversely related to the square of the distance between objects. This means that as the distance between objects increases, the gravitational force decreases. Mathematically, the relationship is described by the inverse square law: FG ∝ 1/d^2, where d is the distance between the objects.

When you shine a flashlight at a mirror the ray of light that shines back at you is the ray of incidence?

When you shine a flashlight at a mirror, the ray of light that shines back at you is the ray of reflection, not incidence. The ray of incidence is the incoming ray of light that strikes the mirror. The ray of reflection is the outgoing ray that bounces off the mirror at an equal but opposite angle to the incident ray.

What are one or two products sold in this country that are tested using the scientific method before they are placed on the market and then later found to be dangerous?

One example is pharmaceutical drugs, which undergo rigorous testing using the scientific method before receiving approval for market release. Sometimes, unforeseen side effects may emerge after widespread use, prompting recalls or warnings. Another example could be certain food additives or chemicals used in consumer products, which are initially approved based on scientific data but may later be found to pose health risks through further research and testing.

What is the next step in the scientific method fallowing the formation of a hypoythesis?

The next step in the scientific method after forming a hypothesis is to design and conduct experiments to test the hypothesis. This involves carefully controlling variables, collecting data, and analyzing results to draw conclusions.

What is a characteristic of a hypothesis?

it should be clearly and concisely stated.

simple to understand.

portray a relationship with the problem being investigated.

specific showing the stand of the researcher.

easy to test,verify,limited in the scope and consistent with the problem being studied.

What is the part of a science experiment that changes - called?

The part of a science experiment that changes is called the independent variable. This is the factor that is manipulated or controlled by the experimenter to observe its effect on the dependent variable.

Is phthalic anhydride is soluble in methanol?

Phthalic anhydride is slightly soluble in methanol. But beware! In this case, phthalic anhydride will actually react with its solvent. This is called estrification of the anhydride. Methanol will break the ring of Phthalic anhydride and make an ester.

C6H4(CO)2O + CH3OH --> C6H4(CO2H)(CO2CH3)

Similarly, you might THINK Phthalic anhydride is soluble in water, but it actually reacts with water to make phthalic acid.

If you want to make a true solution of phthalic anhydride, I would recommend acetone, or methylethyl ketone.

Why does water boil faster in the mountains than the city?

Water boils faster in the mountains because the air pressure is lower at higher altitudes. Lower air pressure reduces the boiling point of water, causing it to reach boiling temperature faster than at sea level where air pressure is higher.