Chemistry Topics 1-5

Question 1

What are the limitations between the particle models?

Answer 1

The chemical bonds between particles are not represented

Question 2

A chemical bond only between two metals

Answer 2

Metallic bonding
Surrounded by a sea of delocalised electrons.
Strong electrostatic force of attraction

Question 3

What is it called when you mix a pure metal and another metal?

Answer 3

Alloys
The two mixed metals have different sized particles so that they can’t slide due to the different sized metals

Question 4

Ionic Bonding is?

Answer 4

Occurs between a metal and a none metal

Question 5

What is an Ionic Compound?

Answer 5

Form Structures called ‘Giant Lattices’
High melting and boiling point - lots of energy is required to break the strong electrostatic force of attraction

Question 6

Non-Metals only
Low melting and Boiling Points
Weak intermolecular forces
does not conduct electricity

Answer 6

Covalent Bond

Question 7

Graphite is a?

Answer 7

Giant covalent-structure
bonded to 3 other carbons
one free delocalised electron electrons
layers are free to slide.
can conduct electricity

Question 8

What is Nanoscience

Answer 8

a structure that is 1-100nm in size
high surface area to volume ratio

Question 9

Hexagon shaped
5-7 carbon atoms
deliver drugs to the body

Answer 9

Fullerenes

Question 10

Carbon Nanotubes

Answer 10

small but very long
can conduct electricity
strengthen materials