Unit 1.4 Properties

Question 1

What do ionic compounds form?

Answer 1

A lattice structure

Question 2

What structure is an ionic lattice

Answer 2

A cube like structure

Question 3

What does a lattice structure create?

Answer 3

Compounds with a high melting point which conduct when molten or in solution but never when solid

Question 4

Do ionic compounds dissolve In water easily?

Answer 4

Yes

Question 5

What happens when ionic compounds dissolve In water?

Answer 5

Their lattice breaks up completely to form free ions, enabling them to conduct electricity as the ions are free to carry the electrical charge.

Question 6

What is there melting point like and why?

Answer 6

They have a high melting point because to melt an ionic compound the strong ionic bonds must be broken which requires lots of energy

Question 7

What are the two types of covalent substances?

Answer 7

Covalent network and covalent molecular

Question 8

What is the substance of a covalent network like?

Answer 8

Very high melting points, boiling points and are very hard

Question 9

What is an example of a covalent network?

Answer 9

Diamond, used in cutting tools for cutting through rock