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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
Admontite is a rare mineral belonging to the borate group. It typically appears as colorless to white or light gray in color and is found in association with other borate minerals in specific geological environments. Admontite's crystal structure and properties make it of interest to mineralogists and collectors.
Is glycerol an acid or a base?
No, by which I mean, it isn't really either one. The alcoholic proton (the hydrogen in the OH group) is very weakly acidic, but in most compounds not enough to actually notice under most circumstances. (One exception is phenol, which you may know under its older trivial name "carbolic acid" ... it's a weak acid, but acidic enough to deserve the name.)It looks like the first pKa for glycerol is somewhere around 14, meaning that it's only slightly more "acidic" than water itself is.
What do scientist use to do their experiments?
The tools that a scientist would use to conduct an experiment would vary greatly on the nature of the experiment.
The experimental group and the?
Learn about the difference between the control group and the experimental group in a scientific experiment.
test it out
co2 and oxygen even a little methane
How does the altitude effect the size of a balloon?
As the external pressure drops with increasing altitude,
balloons generally expand with height.
Is a decaying compost pile an example of physical change?
No, a decaying compost pile is not an example of a physical change. The process of composting results in a different physical appearance or state -- which is physical change -- but it is not reversible and necessitates a change in structure -- which is chemical change.
What is the second name of Mathematics?
Mathematics is a branch of Science. Other terms referring to Mathematics are Math and Arithmetic.
When should a scientist report their result?
When they have done many tests and have found a conclusion
How well does camouflage work?
As a former commando I can tell you that proper camouflage with appropriate training is extremely effective. There have been instances during exercises that similarly trained officers and soldiers would pass by me and even stepped on me a couple of times without noticing me.
Of course proper camouflage is nothing like what you see in the movies. You must be painted with appropriate to the environment paint sticks from head to nails and may even consider incorporating environmental natural fauna to help you with it. There are also nets where you can attach leaves and branches or even special camo canvasses (but I always prefer natural environment stuff). Furthermore your weapon and anything you carry must also be fully camouflaged usually with camo canvasses
Furthermore proper camouflage must incorporate several colours that are related to the environment colours, for example you would not use dark green colours in a yellowish environment and vice versa. Also the way you paint yourself must not be regular stripes but lines and curves that will break the shape of your figure under any light otherwise you will be spotted by your figure.
A common mistake that beginners make is their heavy use of black and dark colours especially in the night. Yes in the night it is a good idea to use slightly darker colours than you would use during the day but not way too much because once a flashlight is directed to you, your figure will be distinct from the background.
So yes proper camouflage requires training, good instinct and good environment surveillance as well as correct movement or not movement to be effective. But yes it is very effective and if you are a soldier it may save you and your team from being spotted.
To summarize good camouflage requires the following:
- Fully paint exposed skin, nails and eyelids
- Camo clothing suitable for the environment
- Use different colours and shapes to blend in and break figure.
- Use of environmental elements is also recommended especially if you are going to be stationary (if you are moving about it might make you noisy and keep in mind that noise travels faster and further during the night due to higher relative humidity and lack of noise)
- Move only when not being watched, and if you are being watched remain perfectly still no matter how awkward and uncomfortable you may feel.
- Always try to spot mini environments that you would blend in more efficiently.
- Do not wear anything that makes noise or is flashy such as watches, yes even black casios, the screen flashes from indirect lighting)
- Do not smoke ( a cigarette light while puffing can be seen many kilometers away).
If you are interested in stealthy movement try not moving through open plains or on mountain baselines and especially not on top-lines. Slow and smooth is the way to go as rush movements will give away your position. Also beware of any tracks you may leave, though sometimes leaving tracks is inevitable (ex. wheat or tall grass fields) try making them as irregular as possible and never in straight lines.
And remember darkness and nature are your friends.
Unless of course you are referring to natural camouflage of plants or animals... Usually their camouflage is effective against their main preditors. For example zebra's are easily seen and distinguished with human eyes but if you are a lion or another big cat isolating one zebra from the rest of the pack is near impossible.
Which variable of a well -designed experiment might be affected by the factor being tested?
dependent variable
When gathering glassware and equipment for an experiment you should?
Wear gloves so that you don't damage your hands.
Which anomalous data might the manager throw out before calculating the mean?
Any anomalous data for which there is a clear, external explanation.
Why is it important to only test ONE variable at a time in s scientific investigation?
If you test more than one variable you don't know which one caused the changes.
What ever happened to nano technology?
Nano Technology is all around you in 32 GB micro-SD Cards as a prime example.
What ever happened to it? It's everywhere but you never hear about it.
Probably our next step will be pico technology.
It is a chemical change, because the borax reacts to the heated water.
What is an experiment in which all factors that are identical have?
Constants are the factors which do not change. Variables are the factors which change. If that is what you are referring to.
Does baking soda and vingar become a chemical change or physical change?
A chemical change, since there is carbon dioxide produced, a compound not previously present.
How do you calculate the uncertainty of data?
When involving in scientific experiments, it is very important to make measurement. In each and every measurement we take, say a length, time, angle etc. we have to use a particular instrument. As every instrument has a least count (also known as the minimal reading), there will be an uncertainty left.
As an example, consider a measurement using a vernier caliper as at 10.00 cm, there will be an error of 0.01cm. If we do the same measurement by a meter ruler, there'll be an error of 0.1 cm, or 1 mm.
Therefore the uncertainty of a particular measurement is dependent on the instrument it has been taken. As a convention we take the 1/2 of the least count for analog instruments and the least count for digital instruments as its uncertainty.
