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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...

aparna from Petaluma asks

Why is blood salty?

Shakira from Mississauga asks

Why is it that alcohols do not follow a trend for their melting points, like their boiling points...

sabiha yamin from lahore, pakistan asks

I want to knock out the PHB depolymerase gene from the genomic DNA of a bacterium. Can you suggest...

Daniel Eyre asks

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

David Howard from UK asks

Can you tell me whether it would be possible to launch a spacecraft into orbit using a giant...

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...

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,...

Robert Steinhaus from Castro Valley asks

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

John Douglass asks

Hexane seeps out of the ground at old sites of underground gasoline storage tanks. Can I smell...

Ed from Port Orchard, Washington, USA asks

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

Edward Driedger asks

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

Atalinder S. Bindra asks

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

KIm from Waldorf asks

What furnishs H30+ in water solution?

Pierce H. asks

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

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...

Val Mullen asks

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

Alvina Chung from Sydney asks

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

S.Leeberman asks

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

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...

Vasu from London,ON asks

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

David Magill from Shippensburg asks

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

Dave from Sutton asks

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

Wilma de leon from Philippines asks

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

Adil asks

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

Andrew from Friendly asks

Who was the first scientist to study light?

Bertrand Xiao asks

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

Duane from the Internet asks

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

E.H. from AOL asks

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

erin asks

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

TJ from Thunder Bay asks

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

Amanda Gillis from Margaree asks

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

Furqan from Lahore asks

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

David Keirsey asks

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

Ian from London asks

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

Leo Capistrano asks

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

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...

M Harish from Mumbai asks

Why does a bar magnet repel when it breaks?    n====|====s

Fester from Tacoma asks

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

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...