Chapter 2 - The Periodic Table and Bonding

Question 1

what part of an atom determines its position on the periodic table?

Answer 1

Atomic Number (Amount of Protons)

Question 2

How many electrons are in the outer shell of an atom of a group 7 element?

Answer 2

7

Question 3

Describe how you would work out the electron configuration of an atom, given its atomic number.

Answer 3

Atomic Number = Number of Electrons

Question 4

Are the elements in Group 1 and 2 metals or non-metals?

Answer 4

Metals

Question 5

what type of ion does an element from group 1 form?

Answer 5

Loses an electron to become 1+

Question 6

what type of ion does an element from group 7 form?

Answer 6

Gains an electron to become 1-

Question 7

State three properties of ionic compounds

Answer 7

1. High Melting and Boiling Points
2. Conductors of electricity when molten or in solution
3. Brittle in nature

Question 8

what is covalent bonding?

Answer 8

The electrostatic force between two particles that involve the sharing of electrons, often between non-metals

Question 9

Explain why ionic compounds only conduct electricity when molten or in solution

Answer 9

The ionic lattice is broken down allowing the ions to move freely and so conduction occurs

Question 10

What is metallic bonding?

Answer 10

the electrostatic attraction between positively charged metal ions and delocalised electrons

Question 11

List two properties of metals and explain how metallic structure causes each property

Answer 11

High Melting/ Boiling Point, Metallic bonds are strong and require lots of energy to break

Ductile, Layers of metal ions can slide over each other when forces are applied