Bonding,structure And Properties Of Matter

Question 1

What type of forces exist between oppositely charged ions?

Answer 1

Electrostatic

Question 2

What type of structure is found in ionic compounds?

Answer 2

Giant lattice

Question 3

Describe bonding and structure in an ionic compound

Answer 3

Giant lattice,strong electrostatic attraction between oppositely charged ions with forces acting in all directions

Question 4

How can the structure of sodium chloride be represented? What are the limitations?

Answer 4

Space fill model: shows relative sizes of ions and regular pattern but you can only see the outer layer
Ball and stick model: shows all ions,bonds aren’t represented by lines,doesn’t shower outer electrons

Question 5

Properties of ionic compounds

Answer 5

High melting and boiling points,can conduct when molten or solution

Question 6

Why do ionic compounds conduct we melted or dissolved in water

Answer 6

Ions are free to move and carry charge (can’t in solid)

Question 7

How do you work out the empirical formula of an ionic compounds conduct from a diagram

Answer 7

Work out the charges on ions and blade them out

Question 8

A compound is made of calcium and chloride ions, what is the empirical formula?

Answer 8

Calcium : group 2,2+ ion
Chloride : group 7,-1 ion
Need 2 chlorides to balance out the charge on calcium so its CaCl2

Question 9

What type of bonding do you get in polymers (large molecules)

Answer 9

Covalent

Question 10

How are atom linked in a polymer

Answer 10

By strong covalent bonds between atoms, weak intermolecular forces between the polymer chains