Atomic Structure

Question 0

Neutrons

Answer 0

Have no charge

Question 1

Protons

Answer 1

Positively charged

Question 2

Electrons

Answer 2

Small and negative charged

Question 3

Orbitals

Answer 3

Where electrons are found around an atoms nucleus

Question 4

Mass number

Answer 4

Equal to an atoms number of protons and neutrons added together

Question 5

Atomic number

Answer 5

Equal to the number of protons in the nucleus of an atom

Question 6

Number of neutrons =

Answer 6

Mass number - atomic number

Question 7

Isotopes

Answer 7

Atoms with equal numbers of protons but differ in their neutron numbers

Question 8

Cations

Answer 8

Positive ions and form when a neutral atom gains electrons. They are larger than their parent atom

Question 9

Anions

Answer 9

Negative ions and form when a neutral atom gains electrons. They are larger then their parent atom

Question 10

Ernest Rutherfords gold foil experiment

Answer 10

Showed that an atom is mostly empty space with a small dense positively charged nucleus

Question 11

J.J Thompson discovered..

Answer 11

The electron and developed the plum pudding model of the atom

Question 12

Dalton’s model

Answer 12

Of the atom was a solid sphere of matter that was uniform throughout

Question 13

Bohr model

Answer 13

Of the atom placed electrons in a planet like orbits around the nucleus of an atom

Question 14

Wave mechanical model

Answer 14

Of the atom had electrons in orbitals around the nucleus

Question 15

Electrons

Answer 15

Emit energy as a light when they jump from higher energy levels back down to lower energy levels. Bright line spectra are produced

Question 16

Electron configuration

Answer 16

Distribution of electrons in an atom

Question 17

Polyatomic ions

Answer 17

Table E

Groups of atoms with an overall charge

Question 18

Kernal of an atom

Answer 18

Includes everything in an atom except the atoms valence electrons