Inquiry -- Mix and Move

Using two glasses, we placed a couple of teaspoons of salt in one and a couple of drops of red food colouring in the other. Then we poured warm tap water into both glasses. The tap water with the salt in it needed to be stirred until the salt had dissolved.

"Dissolving is when the salt disappears into the water, like it melts". Reid

When the salt had dissolved we poured some of the food colouring water into the salted water.

The food colouring mix dispersed throughout the salted water and then it rose to the top of the salted water and stayed there.




We found that the coloured tap water moved to the top of the salted water because salt water is heavier than tap water.