A Level Chemistry Summer preparation work.

This is an assessment carried out in the first term. The topics in this work are the first to be taught in September and should give you a solid grounding for the course.

Section A

Calculate the molecular mass of the following compounds by adding the atomic masses together. Use the periodic table at the end of these questions to help you.

1. HNO3
2. NaCl
3. NaNO3
4. Na2CO3
5. NaOH
6. Na2SO4
7. KMnO4
8. K2CrO4
9. KHCO3
10. KI

Section B

Write the chemical formula for each compound using the chemical symbols for each element provided in the periodic table.

1. Sodium Chloride
2. Sodium Hydroxide
3. Sodium Carbonate
4. Sodium Sulphate
5. Sodium Phosphate
6. Potassium Chloride
7. Potassium Bromide
8. Potassium Iodide
9. Potassium Hydrogen Carbonate
10. Magnesium Chloride

Section C

In each case, calculate the number of moles of the material in the mass stated.

1. 9.00 g of H2O
2. 88.0 g of CO2
3. 1.70 g of NH3
4. 230 g of C2H5OH
5. 560 g of C2H4
6. 0.640 g of SO2
7. 80.0 g of SO3
8. 18.0 g of HBr
9. 0.0960 g of H2SO4
10. 3.15 g of HNO3

Section D

Calculation of the mass of material in a given number of moles of the Material.

In each case, calculate the mass in grams of the material in the number of moles stated.

1. 2 moles of H2O
2. 3 moles of CO2
3. 2.8 moles of NH3
4. 0.50 moles of C2H5OH
5. 1.2 moles of C2H4
6. 0.64 moles of SO2
7. 3 moles of SO3
8. 1 mole of HBr
9. 0.012 moles of H2SO4
10. 0.15 moles of HNO3