March 28, 2017

Chemistry: Flame Tests in Seven Words


I've scoured the Internet for an easy way to memorize flame test colors (the ones that show up when you place a metal salt over a Bunsen burner).

The best mnemonic came from Reddit. I've added a couple of elements to the original list.
Li (lithium) + C(rimson) = Lick
Na (sodium) + Y(ellow) = Nay
K (potassium) + L(ilac) = Kill
Ca (calcium) + R(ed) = Car
Ba (barium) + G(reen) = Bag
Cu (copper) + B(lue) = Cub
Sr (strontium) + R(ed) = ShreddeR
The pictures below will help sear the mnemonic into your memory. (Bunsen burners are available upon request.)


Li (lithium) + C(rimson) = Lick
Crimson is a deep, purplish red. Think of the Alabama Crimson Tide.
Crimson is Harvard University's school color, and The Harvard Crimson is the name of its daily newspaper.

Na (sodium) + Y(ellow) = Nay
Street lights contain sodium vapor: that's what makes them yellow. Nay, not white. Yellow!

K (potassium) + L(ilac) = Kill
Lilac is a pale pinkish-violet color.
The more you cut lilac bushes, the faster they grow. They're definitely hard to Kill.

Ca (calcium) + R(ed) = Car
This Car will get you pulled over in style.

Ba (barium) + G(reen) = Bag
Some Bags are "green" because they claim to be environmentally friendly.

Cu (copper) + B(lue) = Cub
Isn't that bear CuCute?
Copper sulfate crystals are blue.

Sr (strontium) + R(ed) = Shredder
Pretend his arm blades are made from elemental strontium, which has an amazing Mohs hardness of 1.5.

Watch the video above to see what the colors look like in real life.

Then take the flame test quiz to apply what you've learned!

I have only one question left: 
Which of the objects in my pictures would you most like to set on fire?

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