Question

explore it! part 1
in front of you are some models of atoms. the black dots represent
the valence electrons for each atom. atoms can bond with other
atoms to create new substances.

1. what is a valence electron?
2. list 3 substances that have atoms which are

bonded.

Explanation:

A valence electron is an electron in the outermost shell of an atom. These electrons are involved in chemical bonding as they can be shared, gained, or lost to form chemical bonds. For the second part, substances with bonded atoms are common. Water (\(H_2O\)) has hydrogen and oxygen atoms bonded. Carbon dioxide (\(CO_2\)) has carbon and oxygen atoms bonded. Methane (\(CH_4\)) has carbon and hydrogen atoms bonded.

Answer:

1. A valence electron is an electron in the outermost shell of an atom.
2. Water (\(H_2O\)), carbon dioxide (\(CO_2\)), methane (\(CH_4\)).