Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What is the common name given to the group 7 elements?
   • The halogens
2. Describe the trend in boiling point and melting point of elements as you go down group 7?
   • As you go down group 7, the melting and boiling points of the elements increases.
3. Describe the trend in reactivity of elements as you go down group 7?
   • As you go down group 7, the reactivity of the elements decreases.
4. Write a word equation for the reaction between sodium chloride and fluorine. What type of reaction is this?
   • Sodium chloride Fluorine -> Sodium Fluoride Chlorine. This is a displacement reaction as the more reactive halogen displaces the less reactive halogen from its compound.
5. In terms of electron structure, whAt do all group 7 elements share in common?
   • They all have 7 electrons in their outermost shell
6. List the elements of group 7 in order of reactivity.
   • Fluorine, Chlorine, Bromine, Iodine, Astatine
7. Many transition elements are also useful as catalysts. What is a catalyst?
   • A catalyst is a substance which speeds up a chemical reaction without being used up itself.
8. List the general properties of compounds of transition elements