Covalent bonds

Question 1

covalent bond

Answer 1

electron are shared between two non metals

Question 2

covalent molecules properties

Answer 2

low melting and boiling point . Doesnt conduct electricity (molecules dont have an overall charge)

Question 3

why do covalent bonds have low mp and bp

Answer 3

strong covalent and weak intermolecular as vibrations between molecules increase the covalent bonds become strong enough to break the intermolecular forces. molecules hold onto together and becomes a gas

Question 4

structure of ionic bonds

Answer 4

giant ionic lattice (three dimensional) every positive ion is surrounded by negative ions.strong forces of attraction

Question 5

properties of ionic compounds

Answer 5

high melting & boiling point. cant conduct electricity when solid (ions are locked in) can conduct electricity when melted(ions can move and carry the chagre)

Question 6

metallic bonding structure

Answer 6

giant structure atoms arranged in layers. electrons i the outer energy level of each atom is delocalised

Question 7

properties of metallic bonds

Answer 7

stong attraction between delocalised negative electrons and positive metal ions.
high melting and boiling point.
good conductors of heat and electricity .

Question 8

physical properties of metals

Answer 8

easily bent and shaped (layers of atoms are able to slide over eachtoher

Question 9

london forces

Answer 9

weak and easily broken. caused by random electron movement. strength is depended on number of elctrons.

Question 9

london forces

Answer 9

weak and easily broken. caused by random electron movement. strength is depended on number of elctrons.

Question 10

when are hydrogen bonds formed?

Answer 10

hydrogen atoms bond to either flourine,oxygen or nitrogen