In this video Paul Andersen explains how atoms are conserved in a chemical reaction. This can be seen in a chemical equation where the subscripts represent the atoms in the molecule and the coefficients represent the molecules. The...

American chestnut trees were all over the US at the end of the 19th century until the fungus wiped most of them out. Scientists have been trying to figure out ways to bring those endangered American chestnuts back to their former glory.

You might think you know how to survive if you end up stranded in the wild, but those tips you read on the internet might just make things worse!

Some tips seem too good to be true, and they are. Others are ingrained...

We prepare a lot of our food to make it safer to eat, but a piece of bread probably won’t hurt you if it’s not made correctly. These six foods, on the other hand, definitely can.

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In this video Paul Andersen explains how stoichiometry can be used to quantify differences in chemical reactions. The coefficients in a balanced chemical equation express the mole proportions in that reaction. These values can be used...

Howcast - Don't give up on a sink with an ugly rust mark staining it. You can remove the unsightly blemish with simple ingredients and persistence.

Learn the basics about Other acids. Acids have a variety of applications for the industrial and domestic markets. What does that mean? Find out more in this video!

It explains the redox reaction on the basis of titrations. It discusses about permanganametry, dichrometry and Iodometry