แผ่นงานReview Atoms and Bonding
คำถามทั้งหมด: 17
แป้นคำตอบReview Atoms and Bonding
คำถามทั้งหมด: 17
Protons
Groups
make up most of the atom’s mass
atomic number
seven
gasoline
water
valence electrons
valance electrons
eight
six
period
neutrons
group
noble gases
because matter is a combination of two or more elements
, c)because matter is one element
models help peope understand what they cannot observe directly
, d)atoms are too small to be observed directly
