Chapter 4

Question 1

smallest particle of matter

Answer 1

atom

Question 2

His results suggested that elements combine in certain proportions because they are made of single atoms

Answer 2

Dalton

Question 3

Discovered the plum pudding model

Answer 3

Thompson

Question 4

Subatomic particle with a negative charge

Answer 4

Electron

Question 5

Made an experiment called “The Shooting gallery”

Answer 5

Rutherford

Question 6

An atom’s central region

Answer 6

Nucleus

Question 7

A region where most electrons are formed

Answer 7

Electron Cloud

Question 8

Subatomic Particle that is positively charged

Answer 8

Proton

Question 9

A unit of mass that describes the mass of an atom or molecule

Answer 9

Atomic Mass Unit

Question 10

Subatomic Particle with no charge

Answer 10

Neutron

Question 11

Number of protons in nucleus

Answer 11

Atomic Number

Question 12

An atom with the same number of protons but different number of neutrons throughout an element

Answer 12

Isotopes

Question 13

Sum of protons and neutrons

Answer 13

Mass Number

Question 14

The mass of an atom expressed in mass units

Answer 14

Atomic Mass