1. Atomic Structure and the Periodic Table

Question 1

Atom

Answer 1

The smallest part of an element

Question 2

Molecule

Answer 2

Made of a fixed number of atoms covalently bonded together

Question 3

Proton/Neutron/Electron: Position Charge Mass

Answer 3

Proton: Nucleus, +1, 1
Neutron: Nucleus, 0, 1
Electron: Shells, -1, (negligible)

Question 4

Atomic Number

Answer 4

The number of protons in an atom

Question 5

Mass Number

Answer 5

The number of protons and neutrons in an atom

Question 6

Isotopes

Answer 6

Atoms with the same number of protons but a different number of neutrons

Question 7

Relative atomic mass (Ar)

Answer 7

The average mass of an atom compared to 1/12 the mass of carbon-12

Question 8

Calculating Ar

Answer 8

(Mass x abundance) + (Mass x abundance)/100

Question 9

Electronic Configuration up to 20

Answer 9

2.8.8.2

Question 10

Metal properties

Answer 10

Conduct Electricity
Have oxides which are basic, reacting with acids to give a salt and water

Question 11

Non-Metal properties

Answer 11

Do not conduct electricity
Have oxides which are acidic or neutral

Question 12

Elements in the same group have

Answer 12

Same number of electrons in outer shell
-Have similar properties

Question 13

Why do noble gases not readily react

Answer 13

They are inert as they have a full outer shell of electrons