EXPT – Evidence for intermolecular forces:-

1)   Floating corks / candles:-

• Note where the corks / candles move to and how they move when ‘wet’ corks are floated on water

2)   Floating needle:-

• Try to float a needle on water and hexane.  You may use a piece of filter paper to help keep a steady hand.  Note which is possible to float a needle on.

3)   Liquid deflection:-

• Fill burettes with the liquids in the table and stand a beaker underneath.

• Hold a charged plastic rod near the jet of the liquid then fill in the table:-

• Draw the molecules and try to explain your observations.