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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...

Gillian from Haliburton asks

I'd like to know what happens to radio waves once they have been emitted. Do they live forever?...

Nick Reed from Cherry Hill asks

I have a question regarding starfish, or seastars, whichever you would like. Is there a species of...

Robert Steinhaus from Castro Valley asks

Can a fast breeder reactor like the famous Candu series of Canadian designed fast reactors be...

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...

Jessica Reynolds asks

Since there are no molecules within the vacuum of space to allow heat transfer, how can the air...

KIm from Waldorf asks

What furnishs H30+ in water solution?

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...

S.Leeberman asks

How do I estimate the mass of an object when I know its volume and nothing more? For example, how...

Atalinder S. Bindra asks

Is it possible to reach a black hole? What is the distance of the nearest black hole from earth? Is...

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,...

Zambi Donburi from Brisbane, Australia asks

Is it true that no mass can travel at the speed of light? If this is true, as you are nearing the...

Ed from Port Orchard, Washington, USA asks

Do magnets become less massive over time? It requires energy to hold a magnet on the refigerator...

aparna from Petaluma asks

Why is blood salty?

Val Mullen asks

Is there really a tree in Tasmania called the Huon Pine that is 20,000 years old?

Edward Driedger asks

How do touch lamps work? If one person touches the touch pad and someone else taps his other hand,...

Daniel Eyre asks

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

Alvina Chung from Sydney asks

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

Adil asks

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

Pierce H. asks

Does mercury in its gas form act the same way as air - I mean if heated, does it rise?

Vasu from London,ON asks

Is it possible for a singularity to form outside a black hole?

Wilma de leon from Philippines asks

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

David Magill from Shippensburg asks

In 1828, Friedrich Wohler, a German chemist attempted to make an inorganic salt, ammonium cyanate,...

Rehan Ahmed from Rahim yar Khan, Pakistan asks

What is vacuum ? How is it created because if we remove the air then the instrument in which we...

Andrew from Friendly asks

Who was the first scientist to study light?

Dave from Sutton asks

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

Duane from the Internet asks

If two magnets are in contact with each other or close proximity to each other either repulsing or...

TJ from Thunder Bay asks

Last spring and summer there were millions of army worms creeping all over everything. Maybe worse...

Bertrand Xiao asks

Is there a better alternative that has yet to be discovered other than zinc to be used in a battery?

Amanda Gillis from Margaree asks

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

David Keirsey asks

What are the quantum numbers that are involved in the distinction between matter and antimatter? I...

Leo Capistrano asks

How long would a single molecule of a radioactive element last? If the half-life of U-235 reduces...

Furqan from Lahore asks

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

Ian from London asks

How can I tell the difference between Zinc and Aluminium metal?

erin asks

Can you explain how those bright sticks work, the ones that glow for hours with a snap and a shake?

E.H. from AOL asks

I understand about the Curie tempurature but I am wondering if an electromagnet has a Curie...

Chris from J-town asks

A friend at a party showed me that you can take a glass bottle, fill it with water, but not all the...

Fester from Tacoma asks

I'm doing a science project and my topic is about the speed of sound. I was wondering if you...

Bruce MacKinnon, CET from Kitchener, Ont asks

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

Kiran Gupta from Singapore asks

Why does a rare earth magnet fall slowly in an aluminium tube but it falls really fast when I toss...