Question 1 [1] are made from subatomic particles square Question 2 Electrons [1] in energy lefvels (electron shells) square Question 3 Atoms are mostly [1] 1 pts 1 pts 1 pts

Question 1<br />Atoms are made from subatomic particles.<br /><br />Question 2<br />Electrons exist in energy levels, also known as electron shells.<br /><br />Question 3<br />Atoms are mostly empty space.