Answers to science questions

If you know of other science questions/answers, please add them to the list!

• How can an artificial sweetener contain no calories?

• What is protein?

• Why does salt melt ice?

• What is a chemical reaction?

• What are the names of all the sciences?

• What is hairspray made of?

• Why do cats have an inner eyelid as well as outer ones?

• How do dry chemical heatpacks work?

• What happens inside hot packs and cold packs?

• How is coffee decaffeinated?

• Why do veins pop out when exercising, and is that good or bad?

• What's Jello(TM) made of?

• Why is it that eating spicy, "hot" food causes the same physical reactions as does physical heat (burning and sweating, for instance)?

• Why can't you put pineapple chunks in Jello?

• Why is most ground brown?

• Why does adding oil to cooking water keep it from boiling over?

• Answers to 200+ questions on Mt. St. Helens

• How do GPS devices work?

• What is a quick test for sucrose?

• What is a simple test for the presence of amino acids?

• What is Salt?

• Why are BHT and BHA added to foods?

• What is quicksand?

• What is a geyser?

• How can a poll of only 1,004 Americans represent 260 million people with only a 3 percent margin of error?

• Why don't magnets work on some stainless steels?

• What makes Alka Seltzer tablets fizz?

• How much gas is produced when baking soda react with excess vinegar?

• Why is nitroglycerin explosive?

• What is cellulose?

• What are some examples of the gas laws in action in everyday life?

• What's a Mammal? (click "Listen" button)

• Why the Sun Makes Noses Go Ah, Ah, Ah ...choo

• Does a Bit of Steel Get Rid of That Garlic Smell?

• Arggh, Why Does the Shower Curtain Attack Me?

• How many molecules are present in a given volume of gas at STP?

• Why are some streetlamps orange?

• Why do Mentos mints foam when you drop them into soda pop?

• Can I simulate soda's effect on the stomach by pouring soda on bacon?

• How can density be found by water displacement?

• How can the mass of air in a room be computed from the room's dimensions?

• Why is the reaction between sodium and water so spectacular?

• How can CO2 gas be detected?

• How do underwater rebreathers scrub CO2 from air supplies?

• How can pure hydrogen gas be prepared and detected?

• Why does combining hydrogen and oxygen typically produce water rather than hydrogen peroxide?

• What is laughing gas?

• How does iron rust?

• Why is wet air less dense than dry air at the same temperature?

• How does the ice in coolers stay cool?

• How does a thermos keep things cold?

The Universe

• Where did the Universe come from?

• What is the mass of the Universe?

• What was there before the Big Bang and what is there outside of our universe?

• What is at the end of the Universe?

• What was the Big Bang?

• What are dark matter and dark energy, and how are they affecting the universe?

• Are virtual particles really constantly popping in and out of existence?

• Why is the sun's corona the hottest layer when it is farther from the sun's core than other layers are?

• Excellent collection of infomation on the big bang from NASA

Soap

• How does soap clean?

• What is soap made of?

• How do you make soap?

DNA

• What is DNA?

• What is DNA?

• How do researchers trace mitochondrial DNA over centuries?

• What is DNA repair?

Computers

• What makes a quantum computer so different (and so much faster) than a conventional computer?

Global Warming

• If carbon dioxide makes up only a minute portion of the atmosphere, how can global warming be traced to it? And how can such a tiny amount of change produce such large effects?