Why is the method of distillation needed for seperating water and salt but isnt needed for sand and salt?

because salt dissolves in water so distillation is needed to separate them out but as sand doesn't dissolve in water you can just filter it.

Why is the method of distillation needed for seperating water and salt but isnt needed for sand and salt? please i really need help so why is the method of distillatiuon needed for seperating water and salt, but isnt needed for seperating sand and water? Salt dissolves in the water. http://en.wikipedia.org/wiki/Sand Sand is really small pieces of rocks and mineral, which are not soluble in water. You can use filter paper to separate the sand from the water. My wife makes coffee each morning. When the coffee is ready, the filter paper is full of coffee grounds, which are small pieces of coffee beans. The coffee contains the soluble chemicals in the coffee beans. If she leaves some coffee in the warm coffee pot, the water will evaporate leaving the dry chemicals in the bottom of the pot. To separate salt from salt water, you boil the solution. The water evaporates leaving the dry salt in the bottom of the beaker. Distillation requires boiling to separate the water from the salt, and then condensing the water vapor to reclaim the water. Filtering only requires a filter paper which has pores smaller than the smallest grain of sand.

1] Water can be separated from salt by distillation because water evaporates far more readily than does salt. FYI, desalination is mostly by reverse osmosis nowadays; distillation uses way too much energy 2] Salt and sand, however, do not have much difference in volatility, so distillation is not a good way to separate them

Why is the method of distillation needed for seperating water and salt but isnt needed for sand and salt? please i really need help so why is the method of distillatiuon needed for seperating water and salt, but isnt needed for seperating sand and water? Salt dissolves in the water. http://en.wikipedia.org/wiki/Sand Sand is really small pieces of rocks and mineral, which are not soluble in water. You can use filter paper to separate the sand from the water. My wife makes coffee each morning. When the coffee is ready, the filter paper is full of coffee grounds, which are small pieces of coffee beans. The coffee contains the soluble chemicals in the coffee beans. If she leaves some coffee in the warm coffee pot, the water will evaporate leaving the dry chemicals in the bottom of the pot. To separate salt from salt water, you boil the solution. The water evaporates leaving the dry salt in the bottom of the beaker. Distillation requires boiling to separate the water from the salt, and then condensing the water vapor to reclaim the water. Filtering only requires a filter paper which has pores smaller than the smallest grain of sand.

1] Water can be separated from salt by distillation because water evaporates far more readily than does salt. FYI, desalination is mostly by reverse osmosis nowadays; distillation uses way too much energy 2] Salt and sand, however, do not have much difference in volatility, so distillation is not a good way to separate them