Is this science explanation correct?

Question

Molecules are often not composed of one single type of atom. Atoms, almost the smallest building blocks of all life, join together with different types of atoms, and form compounds.

Haha...so I don't know how to reply other than this...I'm a yahoo answers newb - thanks guys and my reply to how are they almost the smallest...quarks are smaller.

Answer 1

It is good for an entry course but you have alot of questionablility in your explaination.

'Often not' means sometimes they are composed of 1 single type of atoms, like hydrogen gas, or the oxygen we breath ( H2, O2,) or deadly chlorine gas (Cl2)

Then you say atoms are almost the smallest buiding blocks of all life. How are they ALMOST the smallest buidling blocks of life?

Id just take out the almost so you sound more certain with your explaination.

Im picky :)

Answer 2

Yes they do take our DNA structure or NaCl for example but do not forget about your Diatomic gases (and solids) like H2, O2, N2, F2 Cl2, Br2 or I2. Most compounds and molecules are a mixture of differnt atoms bonded together in a set ratio Take waters 2 Hyrdogens for every 1 oxygen if this ratio was fiffernt it wouldn't be water. The same goes for methane, Octane, and any other molecule on the planet.

Answer 3

Yes

for example, a molecule of water (H2O) contains both hydrogen and oxygen atoms. thus water is a compound

Answer 4

Your statement is correct, although it might help to clarify one thing. When you refer to different types of atoms - you actually mean different elements. So you could rephrase to say that different elements can combine in all sorts of combinations to form different compounds.