Which statements describe elements? Elements can be separated using physical means.
Elements are made of atoms with the same atomic number.
Elements cannot be separated using ordinary chemical means.
Elements may be represented by chemical symbols.
Elements are made of two or more different types of atoms.

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?