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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
What are some good science fair project ideas for high school kids?
Do something about erosion.... it woks really well with an earth science fair project... also anything in math will extreamly wow the judges such as the number of __ in a bag of _____ or, the amount of ___ in and ______ area. i hope this helped!
What happenes when two continental shelves move apart?
When two continental shelves move apart, they create a divergent boundary. This movement can lead to the formation of a new ocean basin as magma rises to fill the gap created by the separating plates. Over time, this process can result in the creation of mid-ocean ridges and new seafloor spreading.
Is there any extremely powerful military explosives that react to a large or small amount of water?
In general, miltary explosives are very water tolerant, and do not react with water. Ammonium nitrate is used for some military engineering work, and is very soluble in water- but does not have a violent reaction. Sodium, potassium and calcium carbide WILL react vigorously.
What is it called when a scientific conclusion is supported?
A scientific conclusion that is supported can be said to have been confirmed, or verified.
What do you call variable that is manipulated by experiments when conducting a experiment?
Interestingly, it is often called the manipulated variable, though it is also called the independent variable and sometimes other names.
What are the characteristics of a controlled experiment?
An experiment with only ONE variable. It should be planned. Also, you should have an investigative question, a hypothesis, alist of materials, a procedure, a conclusion and data, and lastly resourses. It should be something you dont know and should be clear, creative, and cool! (the three c's- clear, creative and cool! Ha!) Just have fun! :) :) :)
What is the difference between physical and chemical dissolution?
Physical dissolution is purely mechanical; an example would be shaking a bottle of Italian salad dressing, the different ingredients mix but don't form a new substance. Chemical dissolution produces new substances; for example, mixing NaOH with HCl forms water and table salt, two chemicals different from what you had to begin with. Also, dissolving table salt in water is a chemical change, though it may not seem like it.
When adding water:
NaCl (s) => Na+ (aq) + Cl- (aq)
This is a very soluble ionic compound and it changes from a neutral compound to ions, a chemical change.
The dissolution of non-ionic compounds, such as sugar, is not a chemical reaction because sugar doesn't separate to ions in solution. i.e., this is a physical dissolution.
When adding water:
C6H12O6 (s) => C6H12O6 (aq)
The dissolution of weak electrolytes is somewhat more complicated. Let's consider acetic acid (vinegar).
When adding water:
CH3COOH (s) => CH3COOH (aq)
Although we write the dissolution for a weak acid or weak base this way, it differs from the sugar example because we know that, actually, some of the molecules go to CH3COO- and H3O+. We don't write this, though, because although some molecules have undergone a chemical reaction, that population is a minority.
Involves explaining the meaning or significance of data gathered.
What are the different types of houses in Tamil Nadu?
There is no big deal of houses of tamilnadu,they are usually built with cement and bricks. They can be flat roofed or have a sloping roof as there is a lot of rainfall there.
How does vinegar affect bean plants?
How vinegar affects plant growth is by being acidic, and it works in negatively against the plant growth. It damages the cells to the plants.
What axis of a graph will always run vertically from the bottom to the top of the page?
The 'Y' axis.
How many images formed when two mirrors are at 45 degree angle?
Use the formula [360/@]-1
@ is the angle of inclination of the two mirrors.
Suppose we keep the two mirrors in the same line, then @ = 180
So there will be only one image.
If suppose we keep two mirrors parallel to each other, then @ = 0 so infinite images.
Now in your case @ = 45
So 7 images will be seen.
Can a new element be created by human beings?
Kinda-sorta. New elements have been created using particle accelerometers, but they haven't been stable, and fall apart quickly.
Why deflection magnetometer kept in tanA position?
A deflection magnetometer is kept in the tanA position to align the magnetic field produced by the Earth with the plane of the magnetometer's needle. This helps ensure accurate measurements of the horizontal component of the Earth's magnetic field by minimizing external disturbances. The tanA position helps in reducing errors in the measurement caused by stray magnetic fields or misalignment.
Can the controlled variable include the manipulated variable and the controlled variable?
Well .. I have the same question .. but this is what i found out ... the MV is what u change delibretly and the CV is what u dont want to change ... but what i am doing is adding somethng to three diffrent think although per trial i am diffrencent ammount of my MV per thing I am adding the same ammount per trial so i will consider it as an CV but its up to you . Well .. I have the same question .. but this is what i found out ... the MV is what u change delibretly and the CV is what u dont want to change ... but what i am doing is adding somethng to three diffrent think although per trial i am diffrencent ammount of my MV per thing I am adding the same ammount per trial so i will consider it as an CV but its up to you .
What happens when you make a rainbow with the help of a glass of water and sunlight?
The sunlight hits the glass of water and then the light disperses out as a spectrum of colour (rainbow). This is because sunlight is white light and white light contains the 7 colours of the rainbow. When it hits the glass the colours refract and disperse out as the spectrum of colours, which we see as a rainbow.
How do you decide the independent variable?
You choose the values of the independent variable. The dependent variable is the one you measure.
What does the term reduced mean in a chemical reaction?
In a chemical reaction, the term "reduced" refers to a substance gaining electrons or decreasing its oxidation state. This results in a decrease in the number of positive charges on the atom or molecule. Reduced substances are often involved in redox reactions where they act as electron acceptors.
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