chapter 2 atoms

Question 1

John Dalton

Answer 1

Father of Modern Atomic Theory

Question 2

Thompson

Answer 2

Plum Pudding
depicts the electrons as negatively-charged particles embedded in a sea of positive charge

Question 3

Ernest Rutherford

Answer 3

Nuclear Model
described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun.

Question 4

Niels Bohr

Answer 4

Bohr Model
the electrons travel around the nucleus of an atom in distinct circular orbits, or shells.

Question 5

Erwin Schrödinger

Answer 5

specifies the probability of finding an electron in the three-dimensional space around the nucleus

Question 6

atomic number

Answer 6

the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table

Question 7

mass number

Answer 7

the total number of protons and neutrons in a nucleus

Question 8

ions

Answer 8

a charged atom or molecule