Group 7 Physical Properties Flashcards
What is the appearance of fluorine at room temperature?
It’s a pale yellow gas.
What is the appearance of chlorine at room temperature?
It’s a green gas.
What is the appearance of bromine at room temperature?
It’s a dark red volatile liquid.
What is the appearance of iodine at room temperature?
It’s a shiny grey/black solid
What happens to the melting and boiling points down the group?
They increase
What happens to the colour of the elements down the group?
They become darker.
What happens to the states of the elements down the group?
They change from gases to liquids to solids at room temperature.
What happens to the volatility down the group?
It decreases.
What are the halogens more soluble in then water?
Organic solvents such as hexane and cyclohexane.
What colour is chlorine dissolved in water and cyclohexane?
Pale green.
What colour is bromine dissolved in water?
Orange/yellow.
What colour is iodine dissolved in water?
Brown.
What colour is bromine dissolved in cyclohexane?
Orange/red/brown.
What colour is iodine dissolved in cyclohexane?
Violet.
What is the upper layer of halogens mixed with an organic solvent?
The halogen dissolved with cyclohexane.
