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Chlorophyll is the most important molecule in the process of photsynthesis. It is what allows plants to convert energy from the sun into usable nutrients. Chlorophyll is the reason that plants are green.
A liquid that is made up of 100% pure isooctane has a rating of 100 octane. A liquid made up of 100% pure heptane (a different hydrocarbon) is said to have an octane rating of 0. A 90 octane fuel is 90% isooctane and 10% heptane.
This molecule is very similar to many other things that go into your car's gas tank. Isooctane is a branched molecule, unlike other octanes which can be straight. It is a desirable fuel because it burns very smooth.
| 7/29/98 - Electron Shells |
Atoms are most comfortable with closed electron shells. That is, they like to have every orbit filled up. Sodium has one electron too many, and it constantly wants to give it away, while chlorine is constanly trying to acquire one electron.
There is a code that all scientists use to help draw molecules. The three most common rules follow:
1. A bond is drawn with a line (straight) between two molecules.
2. A molecule is not specifically shown in a drawing if it is carbon.
3. Hydrogen molecules are not shown at all.
A method for seperating two liquids that have different boiling points. If you have a mixture of liquids A & B that boil at 100 and 150 degrees celsius repspectively, and you want to seperate them, you would distill them. You wouldx heat the mixture to 100 degrees, and the resulting vapor would be almost pure liquid A.
Small pieces of a a substance that are bigger than a molecule that are suspended ina liquid. These little pieces won't dissolve, but the are all so small that they do not affect the liquid properties of the mixture.
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