When an acid solution is diluted, the pH of the solution increases.

What is ∆EN for the bond between Y-P?

The halogens are:

Which family of elements is the most metallic?    (1 mark) 

Select the formula that contains no errors.

Italian salad dressing is a:

The property that best characterises the rare gases is:

An atom’s first 2 energy levels are filled and there are 2 electrons in the third energy level. It’s atomic number is:

An atom of U-238 contains:

Give the chemical formula for the following compounds:  (2 marks each) a) magnesium oxide      b) zinc sulphate   c) iron(II) phosphate   d) calcium hydroxide   e) sodium bicarbonate