C2

Question 1

Define relative atomic mass (3)

Answer 1

The weighted mean mass of an atom of an element relative to 1/12th the mass of a 12/6 carbon atom

Question 2

Ionic lattice (2)

Answer 2

Repeating pattern (1) of oppositely charged ions (1)

Question 3

Metallic bonding + diagram (2)

Answer 3

electrostatic attraction between electrons and positive ions

positive ions and electrons drawn next to each other

Question 4

Relative isotopic mass (2)

Answer 4

Mass of an isotope compared to 1/12th (1) the mass of a carbon-12 atom (1)

Question 5

Isotope (2)

Answer 5

atoms of the same element / same atomic number with different numbers of neutrons and different masses