Answer:
Use dissolution, filtration and evaporation
Step-by-step explanation:
There are a few steps to follow to determine if there is salt in the bucket
1. Pour deionized water into the bucket covering all the sand
2. Filter this mixture leaving the sand as the residue and the water running through as the filtrate
3. Heat the filtrate and evaporate the water. If there is salt left behind in the heating dish then there was salt mixed in with the sand