bonding, Structure And Properties Of Matter

Question 1

what is ionic bonding?

Answer 1

ionic bonding is a strong electrostatic force of attraction between the positive metal ion and the negative non-metal ion

Question 2

what are properties of ionic compounds?

Answer 2

ionic compounds are giant structures of ions they are held together by strong forces of attraction (electrostatic forces).
they have high melting and boiling points. They do not conduct electricity one solid because the ions cannot move they can conduct electricity when molten or in solution because the charged irons are free to move about and carry their charge.

Question 3

what is covalent bonding?

Answer 3

A covalent bond is a shared power of electrons between atoms covalent bonds occur in: non-metallic elements and compounds of non-elements
covalent bonds are very strong.

Question 4

what are small molecules?

Answer 4

The molecules have no overall electrical charge so they cannot conduct electricity substances that consist of small molecules usually have low melting and boiling points. This is because they have weak intermolecular forces the larger the molecules are the stronger than intermolecular forces between the molecules become

Question 5

What are giant covalent structures?

Answer 5

all the atoms and giant covalent structures are linked by strong covalent bonds. These bonds must be broken for substance to melt or boil. That means that giant covalent structures have a very high melting and boiling points.

Question 6

explain the giant covalent structure of diamonds

Answer 6

Diamond has a giant rigid covalent structure each carbon has formed for strong covalent bonds with other carbon atoms all the strong available mean that it is a very hard substance with a very high melting point there are no charge particles so it does not conduct electricity

Question 7

explain the giant covalent structure of graphite

Answer 7

graphite also has a giant covalent structure and a very high melting point each carbon atom forms through covalent bond with other carbon atoms. This results in a layered hexagonal structure. The layers are held together by weak intermolecular forces. This means the layers can slide past each other making graphite soft and slippery. One electron from each carbon atom in graphite is delocalised. This allows graphite to conduct heat and electricity.

Question 8

explain the giant covalent structure of silicon dioxide

Answer 8

silicone dioxide has a lattice structure similar to diamond. Each oxygen atom is drawn to 2 silicone atoms. Each silicon atom is drawn to 4 oxygen atoms.