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Science Experiments
Experiments often conducted by students to test different scientific theories and hypotheses
11,111 Questions
The only elements in pure water are those of which water itself is comprised ...
hydrogen and oxygen. In impure water, any other elements that are themselves
soluble in water, or that are components of water-soluble compounds, or that are
ground up fine enough to be physically suspended in water, can also be found.
Why must at least two successive mass readings be equal before finishing the experiment?
In order for experiment results to be trusted, they must be both precise and accurate. Successive instrument readings help guarantee both of these.
Can you eliminate indeterminate errors in your experiment?
No, they cannot be eliminated. They can be greatly minimized to reduce errors though.
Determinate errorshave a definite direction and magnitude and have an assignable cause (their cause can be determined). Determinate error is also called systematic error. Determinate error can (theoretically) be eliminated.Indeterminate errorsarise from uncertainties in a measurement as discussed above. Indeterminate error is also called random error, or noise. Indeterminate error can be minimized but cannot be eliminated.
SOURCE: http://chemlabs.uoregon.edu/Classes/Exton/Misc/determinate.html
Nitrogen is the 7th element in the Periodic Table (Atomic number). It's located in the 2nd period and group IIIa (13) in the periodic table. It has 7 electrons: 2 in the K orbit, 5 in the L orbit.
Its symbol is (N) and its relative atomic mass is 14.01. Its electronegativity is 3.0.
Boiling point is -195.8°C, melting point -218.4°C, density is 1.85 at 20°C. Oxidation number is -II and electron configuration is 1s22s22p3.
It has hexagonal chrystal structure and a amphoteric acid-base property.
What are the steps to Separate a Mixture?
It all depends on the substance and its physical properties. For example, salt water can be separated by boiling the water and letting the salt remain.
What are some good science experiments that are in the 6th grade science book?
What is the difference in the hardness between glass and fiber glass
How long does it take to suck an egg into a bottle during an air pressure experiment?
About 1 minute...i think!
How many variables can be changed in an experiment?
It depends on the experiment or the category.
you welcome s.a
No it's the variable k.a.
If you turned on an empty microwave oven what would happen?
The light inside would turn on, the turntable would spin, the timer would count down, and this would all continue until the timer reached zero, at which time everything would shut off. Most manuals advise against doing this, because if there's nothing in the oven to absorb the microwaves they can reflect back and damage the klystron (the part that actually generates the microwaves).
What is a last minute science project?
Volcando, diagram of the human body, friction, etc.
gald u asked. im a sophomore who was in the same pickle. i did a reaction time lab. u get ppl to catch a falling meter stick. they hold their thumb and index finger apart, with the end of the meter stick just above their fingers. where they catch it is basically their reaction time. problem. this is not a "reaction time". u can prolly find a formula somwhere to convert it, or find a way to bypass this problem. well that's all i have, hope it helps :P
A Russian botanist born 1872-1919 who invented chromatography.
What needs to be on a science project backboard?
if u are doing a science project u need infromation on ti and a log book IF U DO U WILLL FILL
What kind of application can you have on a science fair project growing crystals?
# First you need two plastic containers (make those small please) # Then you get some bakeing soda and some water # Oh don't forget string(or yarn would do too) # blah blah, MOM I'll be right there...yes i want GRAPES Opps sorry...next number plz # Ok you then get your bakeing and a spoon and dump it in the water of the containers # Stir it and then put the yarn or string in the water # Set it in the sun...(it needs to be in a window) # Wait a few days and see if anything is growing on the yarn! Plz thank me for this...BYE!
What is a good winter science fair topic?
Well this kinda depends where you live because if u dont snow alot than you can't do this project very well..... Ok, this is what i thought of. Ok, first when it snows try to get snow and try to not to melt it. Try to get as much as you can and if you can record it than do it. Try to count how many kinds of different snowflakes there are.
What kind of math do scientist use to analyze data?
For the most part, they use math related to statistics. They use it to interpret their data, and to determine trends and significance of data points collected in an experiment
What are the steps to separate iron filings sand and salt?
Hold a magnet over it and the iron will fly out of the salt and stick to it, and the salt will stay there.
Give you an abtract for the science fair project which food molds the fastest?
The food that moLds the fastest is milk.
