What is ch2ch2ch2ch2ch2?

Answer 1

No CH2 cannot be an element, it would be a compound of Hydrogen and Carbon.

Also CH2 does not exist as a compound, though can be a part of some organic compounds.

CH4 is the compound known as methane.

Answer 2

A group made up of a Carbon with 2 separate Hydrogens covalently bonded to it. The species in a Homologous Series will most often differ by one CH2 group.

For example, look at the Alkanes:

Methane = CH4

Ethane = CH3CH3

Propane = CH3CH2CH3

Butane = CH3CH2CH2CH3

Pentane = CH3CH2CH2CH2CH3

Hexane = CH3CH2CH2CH2CH2CH3

The pattern isn't particularly clear in the first two examples, but can be viewed more easily from Propane onwards. Since Carbon can have 4 bonds, the first (and last) Carbon atom will be attached to three Hydrogen atoms (CH3) as well as the next Carbon. Everything in between is a CH2 group, as the Carbon here is attached to the previous and next Carbon atoms as well as two Hydrogen atoms.

I hope this helps!

Answer 3

CH2 is one carbon and two hydrogen. It does not exist on its own but is often a part of larger molecules.

Answer 4

It is one hydrogen short of being methanol. It is a carbocation. I am not sure how name it, though. Methanol carbocation?

Answer 5

Ethylene is the molecule represented by CH2CH2. However, it is usually written C2H4.

Answer 6

cyclopentane

Answer 7

CH8.

Answer 8

Methylene