Review all

 
1 Draw an oxide ion (3)  
2 What does 37Cl and 35Cl have in common?  (2)  
3 How does 37Cl and 35Cl differ? (1)  
4 Write a balanced chemical reaction for Aluminium and Sulphuric acid (4)  
5 Assign Oxidation numbers to determine what has been reduced in the reaction above, explain your answer  (6)  
6 What is the reducing agent? (1)  
7 How would you define reduction (1)  
8 Calculate the % of S in H2SO4 (2)  
9 Sulphuric acid is a strong acid, explain what this means?  (1)  
10 Sulphuric acid contains 2 protons, what do we call acids that contain 2 protons  (1)  
11 Sulphuric acid can be neutralised by alkalis, what is an alkali?  (1)  
12 Look at this reaction:   
  Br2 + H2S 2HBr + S
a Assign oxidation numbers to each element  (3)  
b What is the spectator ion ? Explain your answer (2)  
c Rewrite the reaction as an ionic equation  (2)