covalent,3 states, diamond,graphite

Question 1

3 states of matter

Answer 1

solid,liquid,gas

Question 2

explain the three states of matter

Answer 2

solid particles are closely packed in a regular pattern and force of attraction between is strong, Liquid particles closely packed but moving around force of attraction is weak ,gas parties are widely spaced and moving around forces of attraction is very weak

Question 3

what are cation and anions

Answer 3

cation is postively charges ions while anions are negatively charged ions

Question 4

when a substance changes state….

Answer 4

the covalent bonds are not broken but the intermolecular forces are broken

Question 5

as the molecular size increases

Answer 5

the intermolecular forces increase

Question 6

small covalent molecules can or cannot conduct electricity?

Answer 6

they cannot as they have no delocalised electrons charges

Question 7

properties of diamond

Answer 7

1.diamond has a giant covalent structure
2. each carbon atom has 4 bonds
3.high melting and boiling point
4.cannot conduct electricity
5. hard substance

Question 8

properties of graphite

Answer 8

1. graphite is soft due to the layers standing over each other
   2.graphite is a good conduction of electricity as each carbon atom is boned to 3 others this means there is 1 delocalised electron to carry the charge through the structure