Group 7(Halogens)-Chem

• What do you call the Group 7 elements?

  Halogens
• They all form ....... molecules

  Diatomic
• How many covalent bonds do they form?

  All form one single covalent bond
• Does reactivity increase down the group?

  Reactivity decreases.
• MP and BP decreases down the group.

  No, MP and BP increases down the group
• What state is fluorine in room temperature?

  Gas
• What colour is fluorine?

  Yellow gas
• Name the characteristics of chlorine

  Very reactive and poisonous
• What is fluorine's colour when aqueous?

  Non- existent
• What state is chlorine in at room temperature?

  Gas
• What colours is chlorine?

  Pale yellow/green
• State the characteristics of chlorine

  Reactive, poisonous, and dense
• What is chlorine's colour when aqueous?

  Pale green
• What state is bromine in room temperature?

  Liquid
• What colour is bromine?

  Red-brown
• Name the characteristics of bromine.

  Dense, and volatile
• What is bromine's colour when aqueous?

  Orange
• What state is iodine at room temperature?

  Solid
• What colour is iodine?

  Purple/black
• Name the characteristics of iodine?

  It sublimes to form a purple vapour
• What's iodine's colour when aqueous?

  Dark brown
• As you go down the group 7 the halogens get....

  Bigger.
• As the molecules get bigger, the .......... between molecules get ........

  Intermolecular forces, and stronger.
• What is more required to break IMF's as the molecules get bigger?

  Energy.
• Why does BP increase?

  Because energy is required to break IMF's
• Define displacement reactions.

  It is the displacement of a less reactive element by a more reactive element in a compound.