C2 - Unit 2

What is ionic bonding?
Compounds held together by strong forces between oppositely charged ions.
1 of 15
What is covalent bonding?
When atoms of non-metallic elements join together by sharing electrons.
2 of 15
What are the characteristics of giant ionic compounds?
High melting points, solid at room temperature, conduct electricity when melted or dissolved in water.
3 of 15
What are the characteristics of simple molecules?
Low melting and boiling points, have no charge, do not conduct electricity and weak intermolecular forces.
4 of 15
What are the characteristics of giant covalent structures?
Very high melting points, conduct electricity (graphite), each atom has 4 covalent bonds (diamond) and layers (graphite).
5 of 15
What are the characteristics of giant metallic structures?
Can be bent and deformed and return to their shape when heated, conduct heat and electricity and are harder.
6 of 15
What is a thermosoftening polymer?
Becomes soft when heated, but hard when cooled again - can be shaped then be remoulded by heating again.
7 of 15
What is a thermosetting polymer?
Do not melt or soften when heated.
8 of 15
What are isotopes?
Atoms of the same element with different numbers of neutrons
9 of 15
What does a mass spectrometer do?
Finds the relative molecular mass of a compound from its ion peak.
10 of 15
What do acids produce when they are added to water?
Hydrogen ions (H+)
11 of 15
What do alkalis produce when they are dissolved in water?
Hydroxide ions (OH-)
12 of 15
What happens when an acid reacts with a base?
A neutralisation reaction takes place and produces salt and water.
13 of 15
What happens when an acid and a metal react?
A salt and hydrogen gas is produced,
14 of 15
How can insoluable salts be made?
By reacting 2 solutions to produce a precipitate.
15 of 15

Other cards in this set

Card 2

Front

What is covalent bonding?

Back

When atoms of non-metallic elements join together by sharing electrons.

Card 3

Front

What are the characteristics of giant ionic compounds?

Back

Preview of the front of card 3

Card 4

Front

What are the characteristics of simple molecules?

Back

Preview of the front of card 4

Card 5

Front

What are the characteristics of giant covalent structures?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Structure and bonding resources »