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erin asks

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

Kay asks

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

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...

Steve Tran asks

Hi, my name is Steve and I am a junior bodybuilder. Which one gives you the red tan, the normal...

Pierce H. asks

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

Willam Lockie asks

What is the protocol used to determine where each country is allowed to put its satellites to avoid...

Kirandeep from Ludhiana asks

Why do proteins form lather on making their solutions?

Fern Marques from North Bay, Ontario asks

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

Aime Roger from Halifax asks

I am quite confused with temperature scales! i would like to know the link between the degree...

C.L.Bridger asks

What chemical additives can be used to increase the octane rating of unleaded gasoline?

John Crowe from Dublin asks

If I knew the centre of the universe and began to travel toward it, would I begin to decrease in...

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...

M Harish from Mumbai asks

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

Matt from Ottawa asks

Knowing the basic functions of magnets (dipoles, domaines...) I still don't understand WHY two...

Nijin from khd asks

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

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...

Dallin Shaner from the Internet asks

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

Loubelle I. Depita from Koronadal City, South Cotabato, Philippines asks

Why does Nitric Acid stain the human skin yellow?

Gabby Stec from Harrisburg asks

Why, specifically, do ferrite magnets gain strength in low temperatures?

Harrison from the Internet asks

Why does decaying food cause gas? I have been trying to find resources but can't find any could you...

Leah W. from Duluth asks

What is the smallest living thing? What is the largest living thing?

Amanda Gillis from Margaree asks

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

Dawn from Santa Clarita asks

Is a seed a living thing? If so, how do you prove it? Is it living before you add water?

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...

Nikhil Bhansali from New Delhi asks

Why are the lipids found in the human body mostly even numbered?

Ethan Heil from Salem, VA asks

I was reading about the tensile strength of certain fabrics, and was wondering what kind of...

Ernie Epp from Kenora, ON asks

Collision of galaxie clusters. In recent news reports that I've read it has been reported...

Ava Gabourel from New York asks

Who discovered High Blood Pressure and what year?

Steve from Honolulu, HI asks

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

Jestin from India asks

Why rainbow is a bow?

tina from the Internet asks

Will pea seeds germinate slower in a liquid substace other than water? why? I am conducting an...

Danielle Panchuk from Calgary asks

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

Betsy Kirk asks

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

julie from Soledad asks

What is the polar nature of water?

Vasu from London,ON asks

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

Roman Tanisis from Coquitlam, BC asks

Hi was always wondering if it is ok to use a higher voltage power supply for a lower voltage...

Rudolf Olivier from Gauteng, South Africa asks

Water is made up of H2O. H will burn and O2 will burn. Why does water not burn?

Scott Livingston from Charlottetown, Prince Edward Island asks

Looking for pictures of Tranquility base or any of the other lunar landing spots on the moon taken...

Andrew from Friendly asks

Who was the first scientist to study light?

Darren Connell from the Internet asks

We have the ability to use sound frequency to cancel out unwanted sounds, and since light is a...