Name this carbon compound.

Ketone(or ketene) is only the type of this compound.

To name this compound,
1) we look for its functional group, and find the suffix
when we see the >C=C=O group, we know it is a ketene, which is end with -enone
2) Then we count the no. of C-atom in the carbon chain, then work out the prefix
With two C-atom, we know that its prefix eth-

So, to be accurate, this is a compound called ethenone.

It can be polymerized (readily).

2012-01-25 16:41:17 補充：
Brian,

如果題目問的是C2H2O，你的答案便沒有問題
但題目已明確地給出該化合物的結構，所以，那不可以是alkynol或epoxide類的化合物，要小心看題呀

formula 是C2H2O 的alkynol 叫乙炔醇ethynol (你串錯左)
而formula 是C2H2O epoxide 叫環氧乙烯oxirene

中文：乙酮
英文：ethenone
字首：乙
字尾：酮

There are 3 different structures according to your formulations :
1)ethenone O=C=CH2 .
2)ethylnol HCtriplebond with other C-OH
3)Epoxide the oxygen is forming a ring structure with two carbons .

Since the three structures having double , triple bond & ring structures , polymerization is highly possible .

I think it is a ketone. The rightmost carbon is double-bonded to the oxygen atom and form two covalent bonds to other two carbon atoms (Although they are the same one.) .

Possible to be polymerized