5.6 What is the pH-value of water? (1)  

2.4 Acid base reactions are exchange reactions. (1)  

3.1.2 Name the reactant(s) in this chemical equation.  (1)

1.4 Which one of the following characteristics is not a characteristic of an acid? (2)  

3.2 Balance the following chemical equation: (2)   SO2+O2 →SO3      

4.3 What is the systematic name of the product of the reaction between phosphorus and oxygen?   (1)

1.2 Group 17 on the periodic table is known as: (2)  

5.3 Complete the following sentence by filling in the missing words: Red litmus paper remains red in the presence of a and a (2)

5.4 What do you think will happen when an acid and a base mix? (1)

4.1 Describe what you will see the moment phosphorus reacts with oxygen?  (1)