4.1 Development of the Atomic Theory

Question 1

atom

Answer 1

the smallest unit of an element that maintains the properties of an element

Question 2

electron

Answer 2

a subatomic particle that has a negative charge

Question 3

nucleus

Answer 3

in physical science, an atom’s central region, which is made up of protons and neutrons

Question 4

electron cloud

Answer 4

a region around the nucleus of an atom where electrons are likely to be found