Chlorine exists as a diatomic molecule. Explain what the term diatomic means.
What does this equation show about the relative reactivity of chlorine and bromine?
Aqueous potassium bromide and aqueous potassium chloride are both colourless. Predict the colour change observed when aqueous chlorine reacts with aqueous potassium bromide.
Complete the chemical equation for the reaction between aqueous bromine and aqueous potassium iodide.\n$\text{Br}_2 + 2\text{KI} \rightarrow$ .......... + ..........
Describe a test used to identify iodide ions. test … result …
Chlorine is used in the manufacture of PVC. Give one additional use of chlorine.
Explain what the term thermal decomposition means.
PVC is a non-biodegradable plastic. Describe two pollution problems linked to non-biodegradable plastics.