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Ernesto C Ignacio from Malabon City, Philippines asks

I understand that in some countries it is prohibited to use industrial acetic acid to make table...

Phil asks

What are the chemical properties of phosphorus?

Pablo Ros asks

I have been charging a leyden jar with an electrophorous (pieplate and cup) and was wondering how...

Anonymous from Queens, NY asks

I would like to know why the bananas has that semi circular shape. I wonder if it is because the...

Marke Jones from Aurora, Ontario asks

Why do many pharmaceutical drugs have HCl (hydrochloride) associated with them? Is this a...

vanessa demelo from paris asks

Why does insulin resistance induce weight gain? I don't understand because insulin is suposed to...

Danielle Panchuk from Calgary asks

Why after drinking massive amounts of alcohol, which is a liquid, do you wake up dehydrated the...

Paul Hosking from Brisbane, Australia asks

We are having a debate at work that we hope you can settle. The father of one of my workmates has...

Dave from Sutton asks

Are there foods to eat which lower/reduce harmful cholesterol levels, or is this achieved by...

Sarah Spratt asks

What is the most critical environmental problem in Canada today?

Gina from Boston, Massachusetts asks

I am allergic to nickel and cobalt. (thanks to patch testing). I think it was provoked by taking...

Dallin Shaner from the Internet asks

What is the scientific explanation of why a magnet's magnetism would decrease or increase when its...

Bruce MacKinnon, CET from Kitchener, Ont asks

Is polyol used in the reaction of isocyantes (methylene diioscyante) the same compound as Glycerol?

Elise asks

I have done lots of research on auroras and I understand almost every thing about them. The basic...

Alvina Chung from Sydney asks

The first four facts below suggest that the earth should be getting heavier and heavier - but it...

Clare Reading from Mesa asks

What is the pH of Diet Pepsi? (or cola,generally) and... Does smoking affect the body's pH? If so,...

RR from Toronto asks

How do electric kettles work?

Kay asks

How can a star become small and dense enough to become a black hole? My understanding is that a...

Ben from the Internet asks

What exactly are Proton Spin Numbers, and how can you have a non-integer proton spin number?

Michel Lamontagne from Edmonton asks

Why does sound get through a surface like a wall better than light? If you use a curtain they both...

Furqan from Lahore asks

Why don't ordinary Silicon diodes emit light like LED's?

KIm from Waldorf asks

What furnishs H30+ in water solution?

Fern Marques from North Bay, Ontario asks

How can planetary angular momentum be tranferred from one body (Earth's rotation) to another...

Wilma de leon from Philippines asks

What is the reaction between a chitin--the polysaccharide intermediate between protein and...

Sarah from Northampton England asks

How do you measure the pH of soil? How do you make up a solution of different pHs? What is the best...

Jennifer Joseph from Dix Hills, NY asks

Animals eat leaves and grasses and this provides them nutrition. Can people take leaves off trees,...

Shane Harrison from England asks

I was watching a short documentary on how the Earth first came about. The part that was puzzling me...

Amanda Gillis from Margaree asks

What are the intermolecular forces for polycrystalline solids? And what is the geometric shape? I'm...

Adil asks

Has absolute zero (0 K) ever been reached a laboratory?

Daniel Eyre asks

How far is Pluto from the sun, and will we ever be able to travel to other planets, besides the...

Peter Griffin from Beaufort, SC asks

Are all non-toxic claiming products really non-toxic? And is there any simple way (such as a way...

deepak singhal from Bangalore (India) asks

Before getting married should we consider blood groups of both individuals? Is there any...

Betsy Kirk asks

What is happening when someone plays a song on wine glasses? They are filled with different...

Meghan asks

Do you have any information about Canadian scientist Dr. W. A. Smirnoff? He works on the spruce...

Sarah Bosquet from Issoudun asks

I'm writing a science-fiction novel and need information about black holes, gravitation and...

Matt from Mississauga asks

I have been reading and learned that electrons flow from negative to positive in the external...

Tony Kirk asks

Would sulfuric acid have a long term effect on an engine and eternal parts of an car if a bottle...

Steve from Honolulu, HI asks

I'm interested in commerical lightsticks... I understand it is hydrogen peroxide and oxalate ester...

Nijin from khd asks

I read in books that bees cannot identify the colour white. Then what will the bees see instead of...

Steve Rock asks

I'd like to model magnetic fields on my computer, but I can't find any software. Can you point me...