Atomic structure

Question 1

what where the atoms known as at first

Answer 1

Átomos

Question 2

protons

Answer 2

-positive charge
-mass of 1amu
-located in nucleus
-identity
-# protons = atom number

Question 3

electron

Answer 3

-Negative charge
-mass of virtually 0 amu
-located in electron cloud
-reactivity

Question 4

neutron

Answer 4

-no charge
-mass of 1amu
-located in nucleus
-holds nucleus