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Wilma de leon from Philippines asks

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

Edward Driedger asks

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

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...

Gillian from Haliburton asks

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

Charles Tramble asks

What can I use to block magnetic lines of force? I have been working on an rf transmitter project...

David Magill from Shippensburg asks

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

patric hedlund asks

According to my family, a comet streaked through the sky the morning one of my uncles was born. His...

Val Mullen asks

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

Vasu from London,ON asks

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

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...

H.D. Lail asks

What is the difference between animal hibernation and a human coma? These states appear similar,...

TJ from Thunder Bay asks

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

Gary Kolling asks

What Satellite Galaxy is moving fastest toward the Galactic center? What Satellite Galaxy is moving...

Charcoal from the Internet asks

What makes classifying dogs in breeds different from classifying humans in races? I thought that...

Sara asks

What happens to a compass when it is held exactly on magnetic north? Does it just spin?

aparna from Petaluma asks

Why is blood salty?

Angela from Portland asks

This question is in regard to ‘vintage Lucite purses’ that sometimes end up having an odor...

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?

Robert Steinhaus from Castro Valley asks

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

Francis from Ottawa asks

When a ball is rotated at the end of a string in a horizontal circle (parallel to the ground) what...

Ian from London asks

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

Furqan from Lahore asks

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

David Woodard from Lansing, MI asks

How do "Fire Retardents" retard fire? If the flash point of any given material never changes? I...

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...

Alvina Chung from Sydney asks

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

Josh from New York asks

If hydrogen peroxide is bad for cells, why is it good for cuts? Also, how is it a good treatment...

James from Hamilton asks

How do we explain the difference between cells that can repair damaged tissue, such as skin cells,...

Amanda Gillis from Margaree asks

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

Pierce H. asks

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

Ed from Port Orchard, Washington, USA asks

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

Kelvin from Markham asks

Why does the Original Coke sink into the water, when Diet Coke floats in the water?

erin asks

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

Bruce MacKinnon, CET from Kitchener, Ont asks

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

Alexis Rolling from Nampa, Alberta,Canada asks

Why was Mars formed?

Julie from London asks

Can you give me some information on the reaction of ascorbic acid and N-Bromosuccinimide? How do...

Vanessa from Calgary asks

What is the history of solar ponds and what trends are expected for solar ponds in the future?

Josh from niagara falls asks

What is the ingredient used to make "hair gel" stiff and hold?

Dr. X from Cornberry asks

I have made a theoretical discovery in my studies. It concerns vibrations of frame of reference in...