My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...
Why is Isobutane ( C4H8) a gas at 25 C and Dodecahedrane ( C20H20) a solid at 25 C?
from Guwahati, Assam, India
Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...
Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?
Does light exert force?
Can you tell me what the exact pH of the acid in our stomach?
How does a lightstick work, and what are the chemicals involved?
Lee Ming Fei
Why does chalk, a cylinder, always break into three pieces when it falls, and not into two or four...
When and how was the kaleidoscope made?
justine van der Werf
I have read that when oxygen is condensed to a liquid state, or indeed to a solid state it becomes...
Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...
Loubelle I. Depita
from Koronadal City, South Cotabato, Philippines
Why are egg & milk used as antidotes for heavy metal poisoning and what other household remedies...
How would Giant Pandas being killed off affect my life?
When does each organ system of the human body reach full maturity?
from Los Angeles
Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?
I am doing some research on microarrays. I wish to know if mRNA's also have open reading frames as...
Grade One, Chesterville Public School
from Chesterville, Ontario
What do you feed baby praying mantises? We found a mother praying mantis who laid an egg sack on a...
Can air in the pleural cavity cause the lungs to expand more fully than they normally would?
How can I find out whether it takes more effort (work by pump) to increase the air pressure in a...
from Andradas-MG- Brazil
When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...
from Morris Plains, NJ
Why is the helical content higher in gelatin with higher molecular weight. In other words, it seems...
from lahore, pakistan
There is a controversy among my collegues that during agarose gel electrophoresis the band that...
Are light and matter the same thing? Can you get matter from light?
In science fiction it is common to see P-P fusion, but my reading seems to indicate it is...
What kind of weather is on Mercury and Saturn? Does it rain or snow on these planets?
What is the structure of chicken bone?
I am interested in finding more information on how to detect the presence of arsenic in the foods...
Is gravity considered to be one of the forms of energy such as electricity, heat, light,...
I've been doing a science fair project testing the effectiveness of Lactaid(TM) lactase. From a...
Specific tissues are meant to perform specific functions. Is it possible to transfer different...
Why does HIV form resistance to ARV so quickly? HIV reproduces itself millions and millions of...
Is it possible to test for, and diagnose, mitochondrial disorders, after death? How? Can this be...
from Orange City, Florida
I have always heard that distilled water is a poor conductor of electricity. Is this true and if...
If neutrinos have mass, as now seems to be the case, they cannot travel at the speed of light …...
If a sound is played to a person over a period of time, is there a way to work out (or to estimate)...
How can you extract the bacteriocins (colicins) from E. Coli? I would like to test the...
How does nicotine affect the growth rate of a plant? If you were to put a cigarette in the soil of...
Why do wet objects shine?
We want to know, when we burn NaCl, what happens to Cl?
In Chemistry today, we learned that when HCl is ionized in water, the H2O becomes H3O+, because of...
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