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Uploaded on Nov 23, 2011
And 23 other questions answered. The ones I missed were:
H: Why are hydrocarbons insoluble in water: Because hydrocarbons are non-polar and water is polar and, y'know, like dissolves like.
I: Why are insects attracted to light: This is hard to answer because there are lots of theories but no one is 100% sure.
X: Why are X-Rays dangerous? Because they can penetrate deeply into our bodies, and yet still interact with them. So they can potentially knock atoms out of place in your DNA, causing mutations which could cause cancer and other disease.