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Flashcards in My Cards Deck (16):
1

What is the charge of metals

Positive

2

What is the charge of non metals

Negative

3

What is the structure of ionic compound

regular lattice

Strong electrostatic forces of attraction between positive and negative ions

4

What are similar properties of ionic compounds

High melting point
High boiling point
Solid = can't conduct electricity
Molten or dissolved = can conduct

5

When working out the formula of ions what needs to be reached

A neutral charge

6

What does ionic boding happen between and what is it

Metal and non metal, transferring of electrons

7

What is covalent bonding and how does it happen

Between non-metals, sharing electrons

8

What are simple covalent molecules properties

Low melting points
Low boiling points
Don't conduct electricity
Gas or liquid at room temperature

9

What are the two giant covalent structures

Diamond (made of carbon)
Silicon dioxide

10

What are the properties of the giant covalent structures

High melting points
High boiling points
Do not conduct electricity

11

What is examples of structures made purely from carbon

Diamond graphite

12

How many bonds does diamond have, how many bonds does graphite have?

Diamond had 4 carbon bonds
Graphite has 3 carbon bonds

13

What are the properties of diamond

Hard
Strong
High melting + boiling point
Rigid

14

What are the properties of graphite

Has layers which are free to slide over eachother
Soft
Slippery
Layers Held together loosely so they can be rubbed off onto paper
Weak intermolecular forces between layers
Only non metal which is a good conductor of heat and electricity
Each carbon atom has one delocalised (free) electron and that's how it can conduct heat and electricity

15

What is in metallic structure

Atoms are in layers which allows electrons to be delocalised which causes it to conduct heat and electricity. The electrons hold the atoms together in a regular structure as the atoms are positive and electrons are negative so the structure is strong

16

What is harder, alloys or pure metals?

Alloys, pure metals have layers which mean they can slide & and alloy doesn't have any layers