During an experiment water was heated in a container covered with a glass lid. the following observations were recorded. observation 1: water droplets form on the inside of the glass lid. observation 2: bubbles rise as the water starts boiling. based on the observation, justify the type of change (physical or chemical) that took place.

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

the answer is c.the valence of the atoms combine .