Test yourself
Try the 7H1 crossword in the link above!
Whiteboard Activities
LearnPremium have a great animation of salt dissolving: select 'Using the
Particle Model' item in the following link, and then Screen 4:
LearnPremium KS3 Science Whiteboard activities
echalk
have a particle model showing different states of matter
echalk also have a 3D molecule viewer for Sodium Chloride
Example of chromatography test using felt tip pens, blotting paper and water