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Anne Marie Helmenstine, Ph.D.

Chemistry March 2004 Archive

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Germanium Facts

Wednesday March 31, 2004
Germanium belongs to the class of elements that are called metalloids or semimetals. Like other elements in this group, trace impurities can be added to germanium to produce semiconductors. Germanium ... Read More

In Like a Lamb, Out Like a Lion?

Monday March 29, 2004
March is drawing to a close. I don't know about where you live, but the first day of March where I live was warm and mild. My kids all came ... Read More

You Were Searching for Alum Crystals?

Sunday March 28, 2004
Here's a look at some of the top internal search terms this week at About Chemistry. How-To's were prominent on the list. Don't forget that you can find the complete ... Read More

Make Gel Air Fresheners

Friday March 26, 2004
I'm not quite sure why this particular tutorial is popular right now, but it doesn't really matter. Maybe it's a symptom of spring fever? This is an easy, fun recipe ... Read More

What Is the Most Poisonous Chemical?

Wednesday March 24, 2004
How poisonous something is depends a lot on how it's administered and several other factors, but this list will give you a general look at some of the most toxic ... Read More

New Chemistry Glossary Terms

Tuesday March 23, 2004
It's always nice to revisit and add to existing features of the site! Yes, I still have lots of glossary terms that I can and will add. For now, definitions ... Read More

Green Chemistry is Good Chemistry

Monday March 22, 2004
There's a sizeable contingent of people who believe chemistry experiments have to be toxic or explosive in order to be educational. These are the folks who feel somehow cheated by ... Read More

You Were Searching for Periodic Tables?

Sunday March 21, 2004
Here's a look at some of the top internal search terms at About Chemistry this past week: Periodic Tables from around the Web How to Grow Crystals Amedeo Avogadro How to Make Slime Chemistry Clip ... Read More

Francium Facts

Thursday March 18, 2004
Francium is the heaviest known member of the alkali metals series. It has the highest equivalent weight of any element and is the most unstable of the first 101 elements ... Read More

Element of the Week E-Course

Wednesday March 17, 2004
Free weekly e-course about the elements! When you sign up you'll get one e-course newsletter a week until you've gotten them all. You'll get facts about the elements and related ... Read More

What Is the Sweetest Compound?

Wednesday March 17, 2004
Did you know there are sweeteners that are 200,000 times sweeter than table sugar? Take a look at this list to find out how your favorite sweetener rates.Most Bitter Compound|Chemistry ... Read More

Sinking Guinness Bubbles

Tuesday March 16, 2004
Researchers at the University of Edinburgh and Stanford University have produced a video which shows some bubbles in Guinness stout flowing down instead of up. Apparently the drag in the ... Read More

That Pesky Dihydrogen Monoxide

Tuesday March 16, 2004
Yahoo News has an AP story about the city of Aliso Viejo, California and its proposed ban of foam cups upon learning that the cups were made using dihydrogen monoxide. ... Read More

You Were Searching for Liquid Elements?

Sunday March 14, 2004
Here's a look at some of the top internal searches at About Chemistry this week: Liquid Elements Soap & Saponification BHA & BHT Preservatives Chemistry Clip Art Growing Crystals

Element Symbol Matching Quiz

Friday March 12, 2004
New quizzes! Can you match the names of the elements to their corresponding symbols? Here's an easy quiz to test your skill, using 10 of the first 18 elements and ... Read More

Top Chemistry Games & Quizzes

Thursday March 11, 2004
The games and quizzes at About Chemistry are even more popular than the periodic table (it's a close second though). Here's a look at some of the most popular features. ... Read More

Potassium Facts

Wednesday March 10, 2004
Did you know that the only metal lighter than potassium is lithium? Potassium was the first metal to be isolated using electrolysis. This silvery metal catches fire when exposed to ... Read More

Snow on Venus

Tuesday March 9, 2004
I always enjoy reading David Bradley's features at Reactive Reports. His article on The Metallic Mounds of Mercury intrigued me. David descibes the implications of Laura Schaefer and Bruce Fegler's ... Read More

What Is Red Mercury?

Monday March 8, 2004
I learned about red mercury while researching the red deposits found on buildings and other structures in coastal South Carolina. The deposits appear to be chemical as opposed to red ... Read More

You Were Searching for Chemical Engineering?

Sunday March 7, 2004
Here's a look at some of the top internal search terms at About Chemistry: Chemical Engineering or Ingeniería Química How to Grow Crystals Most Abundant Element in the Earth's Crust Reverse Osmosis Baking Soda Volcano

Glad that I'm not Soluble

Saturday March 6, 2004
Sure, you can read definitions for chemistry terms using my chemistry glossary, but a repetitive catchy tune sung by animated cats will leave a more lasting impression in your mind, ... Read More

Waging Chem War on Mosquitoes

Friday March 5, 2004
Spring has sprung, at least where I live. Its harbinger was a mosquito - the first of many - so I'm reviewing my anti-mosquito tactics. The city sprays malathion. For ... Read More

Gallium Facts

Thursday March 4, 2004
Gallium becomes a liquid near room temperature and stays a liquid over a wider temperature range than most other metals. The element's name has a two-fold origin: from the Latin ... Read More

What Is the Most Bitter Compound?

Wednesday March 3, 2004
I've had some scorched coffee that I'm sure should have qualified for the prize, but it turns out there's a real answer to this question of taste. Do you know ... Read More

Life on Mars? Water on Mars?

Tuesday March 2, 2004
Today's the day of the big news conference revealing the findings to date by the Martian Rovers. What do you think we'll be told? The most recent MSNBC article includes ... Read More

Cola Ninja Taps Cans for Science

Monday March 1, 2004
I'm a can-tapper. I can open a can of cola that's rolled down the length of my minivan and dropped onto the concrete without getting a fizz explosion (provided the ... Read More

What Is a Mole & Why Are Moles Used?

Monday March 1, 2004
No, we're not talking about the small burrowing mammal! Here's a look at a standard unit in chemistry and why it's used. Tell me more...

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