bonding

Question 1

ionic bonding

Answer 1

-happens between a non-metal and a metal
-the metal atom loses all its outer electrons and they transfer to the non-metal
-the non-metal becomes negative and the metal becomes positive.

Question 2

covalent bonding

Answer 2

-happens between non-metals
-the outer shells overlap and share electrons to form full outer shells

Question 3

properties of ionic bonding

Answer 3

high melting point - strong electrostatic forces between oppositely charged ions that need a lot of energy to break.
conducts electricity when molten or dissolved - the ions can move to carry a charge

Question 4

properties of covalent bonding

Answer 4

low melting/boiling point - there are weak intermolecular forces between molecules which don’t need a lot of energy to break
-don’t conduct electricity - no ions can move

Question 5

properties of metals

Answer 5

-good conductors of electricity - the delocalised electrons can move and carry a charge
-high melting point - very strong electrostatic forces of attraction between the positive ions and the delocalised electrons which need a lot of energy to break
-malleable - layers of atoms can slide past each other.

Question 6

metallic bonding

Answer 6

-the atoms come together to form a giant regular 3D structure
-the metal atoms lose their outer electrons to form positive ions
-these electrons become delocalised and are free to move through the structure