A substance that contains polar covalent bonds may not be overall polar. This is due to the shape of the molecule. Water molecules are polar molecules. Both of the bonds inside the molecule are polar ...

Laser light is the medium of choice for bringing atoms to extremely low temperatures. In laser cooling, atoms are exposed to laser light whose energy is very slightly below the energy of a selected ...

Hydrocarbon Chains: Molecules with long hydrocarbon chains (chains of carbon and hydrogen atoms) are generally hydrophobic.

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Introduction You probably know some liquids, such as oil and water, do not mix together. If you pour them into the same container, they will form separate liquid layers, one on top of the other. Other ...