1h - metallic bonding

Question 1

what is metallic bonding?

Answer 1

the attraction between positive metal ions and delocalised electrons.

Question 2

what are delocalised electrons in metals?

Answer 2

electrons that don’t belong to any particular metal atom, and are free to move throughout the metal lattice

Question 3

why can metals conduct electricity?

Answer 3

because they have free electrons to move and carry charge.

Question 4

why are metals malleable and ductile?

Answer 4

the layers of positive ions can slide over one another.

Question 5

true or false?

alloys are created by mixing a metal with another metal or non-metal

Answer 5

true

Question 6

why do metals have high melting points and boiling points?

Answer 6

because they contain many strong metallic bonds, which need lots of heat energy to overcome.

Question 7

describe the structure of a metal.

Answer 7

positive metal ions arranged in a regular pattern with a “sea” of delocalised electrons moving freely between them

Question 8

true or false?

metallic bonds are strong due to the attraction between negative metal ions and delocalised electrons

Answer 8

false.

the bonds are strong due to the attraction between positive metal ions and delocailsed electrons.