LM P2 1h metallic bonding

Question 1

what is a metallic bond?

Answer 1

two or more metals bonded together, giant structure of atoms arranged in a regular patterns

Question 2

what happens to the atoms in metallic bonding?

Answer 2

when all atoms are together in a structure they share the outer electrons (delocalised electrons) which makes the atoms will become positive ions

Question 3

metallic bonds in terms of electrostatic attractions?

Answer 3

strong electrostatic bonds between delocalised negatively charged electrons and positively charged ions

Question 4

why are metals good conductors?

Answer 4

• delocalised electrons carry electrical current and thermal energy around the structure

Question 5

why are pure metals malleable?

Answer 5

made up of layers that can slide over each other

Question 6

properties of metals?

Answer 6

• high melting and boiling points
• malleable
• good conductors

Question 7

what are alloys?

Answer 7

mix of two or more metals with usually different sized atoms

Question 8

why are alloys harder than pure metals?

Answer 8

different sized atoms that disrupt the layers of the sheets, so it can’t really slide around