George Z from the Internet asks

Many people add mustard to salad dressing (oil and vinegar) in order to render the two usually...

nijin from Khd asks

How did dinosaurs die? If they died due to a comet impact on the Earth there will be dust...

Jennifer from Brooklyn asks

Why does uracil replace thymine in RNA?

Lisa Yang asks

How do split ends affect the way your hair grows? Why do people say that when you have split ends,...

Cynthia from Chilliwack, Canada asks

IF my blood type is A negative what are my parents' blood types? What does it mean to have negative...

petra from chamblee asks

How long does it take styrofoam to decompose? Are there chemicals that help to cause the...

Rick Anderson asks

Is the air we exhale pure carbon dioxide? If not, then what is it?

Terra from Ontario asks

How does sugar conserve food?

Zambi Donburi from Brisbane, Queensland, Australia asks

How did we (as a race) evolve eyebrows and eyelashes. The way I understand it is that to evolve...

Alexandra asks

What's a gathering of frogs called? What's a gathering of toads called?

Aliahs Ahmadzai from Maple Ridge, BC asks

When you get a lighter and get a piece of metal and you turn on the lighter and put it over the...

Markovic Ljiljana asks

When and how was the kaleidoscope made?

Tridib Das from Guwahati, Assam, India asks

Just like 1 mole of water contains Avogadros number of molecules and has the same mass as that of...

Atul Mulay asks

What chemical reaction takes place when you use henna to tint skin? Is it possible to extract the...

Cathy Schroeder asks

Why do batteries behave differently when kept at different temperatures? In my science project a...

David Critch asks

My grade 10 biology teacher tells us that blood comes in different shades of red (dimmer and...

Trevin H. from Rocklin asks

I would like to know the chemical compostion of the venom in a yellow jacket wasp sting, the dosage...

Amanda from Calgary asks

I am interested in finding more information on how to detect the presence of arsenic in the foods...

A.E. asks

Why do we have five fingers? My idea is that one of nature's themes is "having enough." It's like a...

Jerry E. Allen asks

Is it possible to freeze water in a vacuum? Is there a chart that shows water temperature vs....

Marcel Leone asks

Is gravity considered to be one of the forms of energy such as electricity, heat, light,...

Mark Seymour asks

Why are there no penguins in the Arctic, or anywhere in the Northern Hemisphere?

Ethan Diener asks

If body temperature is 98.6 degrees, why does 98.6 degree water feel hot when you place it on your...

Intruder from Singapore asks

How does a lightstick work, and what are the chemicals involved?

George Donati from Andradas-MG- Brazil asks

When you squeeze out a piece of orange-peel on a flame, it catches fire violently. Why? What is...

Kyra Nabeta asks

In dealing with bacterial resistance, should doctors use the strongest antibiotics now to kill off...

Joaquin Cornejo from Los Angeles asks

Why do dry cell batteries (rechargeable) need to be fully drained before they can be recharged?

Marlene Caissie asks

I heard there was a woman named Rosy involved in the discovery of the DNA double helix. Who was she...

Peter Gensch from Auckland, New Zealand asks

Is there an effective and affordable way to kill weeds on an organic basis? (i.e. vinegar?)

Stephen Leece from London asks

I am currently researching how sugar (sucrose) reacts with various chemicals. I am particularly...

Mike Ochman from Whitby asks

Where on earth is the gas neon found? Is it common? Rare? In what form is it usually found (as a...

Brooke from the Internet asks

How do you find the solubility of a substance?

eddie poirier from Orange City, Florida asks

I have always heard that distilled water is a poor conductor of electricity. Is this true and if...

Ross Richardson from Battle Creek, MI asks

How long does it take for alcohol to be detected through the skin after your first drink? Is there...

Karie from Toronto asks

Why do kids with blonde hair have dark brown hair when they're older? Is it the same process as...

Pat asks

If the earth stopped revolving would humans weigh less or more? Would there still be gravity on...

jose from miramar asks

Does fabric softener affect drying time of towels?

özgür o?uz from Yata?an/Mu?la asks

How can an ant hold up a weight which is 50 times more heavy than ant's own weight?

Margaret Moore asks

Can you tell me what the exact pH of the acid in our stomach?

Benjamin Raja from Singapore asks

At what speed does the world's slowest living thing travel? And what is the world's slowest living...