I’ve highlighted the group that halogens are in.

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Quiz on the halogens.

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I’ve highlighted the group that halogens are in. Write what group number it is _____________

Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I) Astatine (At) One of the Halogens is used in swimming pools as a disinfectant (to kill germs). Circle the halogen you think it is from the list on the right. Fluorine (F) Chlorine (Cl) Bromine (Br) Iodine (I) Astatine (At)

Can be bent and re-shaped Low melting point Halogens are non metals. They have the typical properties of non metals. Circle the two properties below that are typical property of a non-metal Can be bent and re-shaped Low melting point Conducts heat and electricity badly Conducts electricity well

The halogens all form coloured gases Underline the correct word… The gases get darker/lighter with increasing atomic number. Chlorine = Pale yellow Bromine = Orange Iodine = Dark purple

These are all the halogens (group 7 elements). Write the atomic number of Fluorine (F) ____________

Solid/liquid/gas at room temperature If the melting point (the temperature it melts at) is below (colder than) 25oC it is a liquid at room temperature If the boiling point (the temperature it evaporates at) is below (colder than) 25oC it is a gas at room temperature. Fill in the last column in the table below: Halogen Melting point (oC) Boiling point (oC) Solid/liquid/gas at room temperature Chlorine -110 -34 Bromine -7 59 Liquid Iodine 114 184

The atomic number of Chlorine is 17 – that means it has 17 electrons in its atom Please draw the electrons onto the diagram of a chlorine atom to the right There can be a maximum of 2 electrons in shell 1 And a maximum of 8 electrons in shell 2

Halogens Iodine Group 7 Darker 7 Chlorine Toxic (kills things)