Water molecules attract nonpolar molecules such as oil. True or false?

Oil and water do not mix.  oil does not dissolve in water but forms droplets instead. Water also attracts, or is attracted to, other polar molecules and ions, including many biomolecules, such as sugars, nucleic acids, and some amino acids.

format change of dna.  

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex