(a(i))[1]
State the formula for: a compound that gives a red colour in a flame test.
(a(ii))[1]
State the formula for: a compound that contains an ion with a $2+$ charge.
(a(iii))[1]
State the formula for: a compound that is produced in respiration.
(a(iv))[1]
State the formula for: a compound used to preserve food.
(a(v))[1]
State the formula for: an element that is used in the production of steel.
(b)[2]
Complete the dot-and-cross diagram to show the electron arrangement in a hydrogen chloride molecule. Show only the outer shell electrons.
(c)[1]
State whether carbon dioxide is a basic oxide or an acidic oxide. Give a reason for your answer.