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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
Why do objects look distorted under water?
A ray of light will change direction when going out of water, into the air. This is called "Refraction".
A ray of light will change direction when going out of water, into the air. This is called "Refraction".
A ray of light will change direction when going out of water, into the air. This is called "Refraction".
A ray of light will change direction when going out of water, into the air. This is called "Refraction".
How does a ramp help to make work easier?
A ramp makes work easier by letting you elevate an object with less input force.
Is a manipulative variable the same as an independent variable?
Yup, a manipulative variable is the variable a scientist deliberately changes. This is also called an independent variable.
What is controlled in a controlled study?
An investigation in science that is controlled is an experiment. The group within the experiment that is controlled is the control group.
A control experiment is designed to check or correct the results of a previous experiment. It does this by removing the variable or variables operating in the other experiment. The comparison obtained is an indication or measurement of the effect of the variables concerned
Although this question is quite ambiguous, stirring a small quantity of salt in water until it dissolves will produce an unsaturated solution as long as the salt is water soluble. Stirring a small amount of a water-insoluble salt in water may produce a saturated solution if the quantity of salt dissolved in the water is such that no more can be dissolved.
What is a website that will help with science fair projects?
sciencebuddies.com was recommended to me by my science teacher and it is a very good website that can help you with science projects and even help you decide what you want your project to be!!
How many variables are changed in an investigation?
Only one variable at a time . after one time has passed you can use more ..
What happens when you put potassium chloride into water?
The potassium reacts with the water to form potassium hydroxide and hydrogen gas. The reaction is very exothermic, and the hydrogen explodes during the reaction. THIS IS A VERY DANGEROUS REACTION! DO NOT ATTEMPT IT ON YOUR OWN!
Many elements found in nature exist as?
The chemical substances found in the atmosphere exist as gases.
Although the same type of biome can appear in many areas around the world, they are often different. Climate and conditions make them similar, but they all have variations in species found. For instance both the African and Amazon rainforests make up the rainforest biome, but they are quite different.
What is the one factor that changes an experiment?
A factor that changes in an experiment is called a dependent variable. It is the variable that is being tested.
Would the brightness of a parallel circuit of 3 globes increase or decrease when a fourth is added?
The brightness would remain constant but the power draw will increase.
If the circuit was series wired, the brightness would go down as you added bulbs.
If you are having the paperclip in bleach it should take about 2-3 weeks.
If you have the paperclip in vinegar then it should take about 3-4 weeks.
If you have a nail in bleach then it should take about 2-3 days.
If you have a nail in vinegar then it sohuld take about 1-2 weeks.
Factor being changed in a controlled experiment is called the?
The factor changed is the independant varible, the thing that the scientist can change each time they run the experiment. The control is the part of the experiment that the scientist determines stays the same.
Ex. They have one person eat a milk chocolate and a dark chocolate and then ask which one they like.
The person is the control because it stays the same.
The chocolate is the independant varible because the type changes.
At the end of an experiment what does the conclusion state?
The conclusions tell why the data support or reject the hypothesis.
Which variable of well-designed experiment might be affected by the factor being tested?
In well-designed experiment, the dependent variable might be affected by the factor being tested. The dependent variable refers to any variable whose value depends on that of another.
What two scientists performed a series of experiments to confirm that DNA was the genetic material?
Gregor Mendel, a European scientist who lived during the 1800s.
Why is chloro acetic acid stronger than acetic acid?
Actually, benzoic acid is the stronger acid when compared to ethanoic acid.
This is due to the delocalisation of the lone pair of electrons on the oxygen atom into the benzene, increasing the polarity of the -OH bond and thus makes the cleaving of the H+ ion easier. The delocalisation of electrons into the benzene ring also stabilises the carboxylate ion. Therefore the position of equilibrium lies more to the right and this shows that benzoic is a more acidic acid.
The simplified version is that a benzene ring is electron withdrawing and a methyl group is electron releasing. The electron withdrawing power makes the releasing of the H+ ion easier.
How many milometers are in ten centimeters?
1 centimeter = 10 millimeters
0.10 centimeter = 1 millimeter
