Most popular

Steve Appleby asks

What catalysts are needed to break down plastic containers, such as yogurt cups?

Lisa Fondelius from Borås, Sweden asks

If pepsin digests proteins in the stomach, how do orally taken vaccines work?

Stef asks

How are minerals used in the production of Canadian coins?

Johnny from Mississauga asks

In math class, my teacher has been frequently making references to what I've mentally labelled, as...

Katie Harvill from Tuscaloosa asks

1)How does prenatal exposure to sex hormones influence behavior later in life? 2)What are gender...

Darren Mewha asks

Why are clouds flat on the bottom? Is it because the air is somehow denser on the level below the...

Zach asks

How were the organelles in the cell named?

Don Roscoe from Vancouver asks

Is there a machine that will measure the amount of oxygen that my lungs use in a breath? Or the...

Tim Sullivan asks

What exactly do meteorologists mean by the term "high pressure"? Do they mean the weight of the...

Eddie from Toronto asks

I know the basic details of how an ionization smoke detector works, where particles enter the...

christina from the Internet asks

Why are portable phones called cellular phones? How do they work?

Kashif from Toronto asks

Why is propylene glycol not an alcohol? Same for glycerol. Why don't they evaporate and smell like...

KENNETH HICKFORD from LONDON ENGLAND asks

(1) What quantities of the earths atmosphere are lost to outer space over a given time? (2) how...

Leo from Montville, NJ asks

Where can I find the data to support that polyvinylpyrrolidone is safe for medical applications? ...

david asks

Why are the time zones on maps rated as longitude & latitude in degrees and minutes?

nohjin asks

Where does the energy in freezing water come from? When water freezes, its volume increases so that...

Eli Sklar asks

What education do you need to become an embryologist?

Teresa G. Nelson from Alford asks

My father was exposed to massive radiation exposure before he fathered two out of three children....

Lenny Rivera from New York asks

I am looking for general inofrmation about pangaea the supercontinent. If pangaea was a super...

Tony from Melbourne asks

In my recent science project, I tried discharging batterys in the freezer, fridge and room. The...

Saw Mui asks

Why does the Periodic Table of the Elements have two separate tables - one above and one below?

Gordon from Oakville, Ontario asks

I was studying for a science exam and stumbled across a chapter that covered energy. The chapter...

Kim Yonda from Winnipeg, Mb asks

I'm doing a project on mercury in water. I was wondering if and how you get mercury out of lakes. ...

Jason Kang from Thornhill asks

If a person was to experience continous pain, of moderate intensity, for a week, is there any...

Iain Hunter asks

What is the chemistry behind the method of cleaning silver where you place it on some aluminum foil...

Kaycie Nabeta asks

Can you explain where the "extra" ATP comes from in photosynthesis? As I understand it: 24 ATP...

Gerald Taylor from El Dorado, Arkansas asks

I was wanting to make my own acid stain for concrete. I have muriatic acid and heavy metals...

david caron from Toronto asks

What is the energy required to split H2O, (joules), and the energy released from combusting H2 +...

Christobell Bison from Sudbury asks

Can Ozone be created? And if so, is it possible to patch up the Earth's protective layer of Ozone...

Thalia Parcs from Toronto asks

I have noticed in Toronto for the past two years, that the weather has been abnormally cloudy in...

Karan Rustagi from Ontario asks

I heard that electricity can be transmitted in other forms than electron flow; like electromagnetic...

Lori Lancaster asks

Why does a saturated solution of calcium acetate gel when either ethanol or isopropanol is added to...

Hannah asks

I am very interested in getting into the field of Psychology and would appreciate basic and...

kirst from the Internet asks

What everyday appliance uses electrostatics?

Brian from Avon Lake asks

I am doing a report on aluminum and the impact it has on our environment for a science class. Do...

Ryan from Toronto asks

I am in grade 7 and attempting to do a Science Fair Project. I would like to know how I could test...

James McCarty from Frankfort, Kentucky asks

Evacuations of the earth's core through volcano eruptions, the pumping of oil, gas, etc., must...

Julie asks

What is the chemical make-up of pear, banana and apple peels?

Lori Anne Stanger from New Liskeard, Ontario asks

As everyone had heard in the news, as a result of the Indian Ocean earthquake and Tsunami of Dec...

Donald Plourde from East Mapleton asks

If I have two 6 volt lead acid Batteries with a 400 ampere hour charge in each one. And I wire the...