I would pour all three in a beaker of water. The baking soda will dissolve into the water, the sawdust will float, and the sand will sink.
I'd then strain out the sand and saw dust. I'd then boil the water until it all evaporates leaving nothing but baking soda.
water and a magnet
You can not separate a mixture of sawdust and sand through filtration process as both of these materials do not pass through the filter paper in the filtration funnel after mixing them in water.
pour water in the cup, the saw dust flouts up the sand stays at the bottom
{Sand+Sawdust}------Sieving--->{Small particles: sand}+{Large particles: sawdust}
very carefully
put it through
If all three are mixed together you can separate the sawdust from the group with a Sieve filter with holes smaller than the sawdust, but larger than the sand/salt particles. You could then use another sieve, if the sand and salt particles are significantly different in size,...OR add water to the mix....the salt will dissolve into solution leaving the sand behind. Pour off the water and let it evaporate, leaving the salt behind. Put the mixture of sand, salt and sawdust into a quantity of water: the sand will sink to the bottom, sawdust will float and salt will dissolve. Skim off (and dry) the floating sawdust. Pour off the water containing the dissolved salt. This is then heated to cause all the water to evaporate (leaving behind the salt). The remaining residue in the original container (wet sand) can now be dried off with heat.
no ..ay ewan ko lng...
Sand.
Add water to the mixture. The sand will sink to the bottom, the wood will float to the top and the salt will dissolve in the water.
Baking soda is soluble in water. Rinse the mix through a filter with water. The sand will remain in the filter while the baking soda dissolves in the water.
If the particles are each of different size, these compounds may be separated based on two selective filtrations using appropriately-sized sieves. If this process is not possible, than separation may be accomplished by dissolving the salt in another polar solvent such as liquid ammonia or methanol (about 1 or 2 grams of NaCl will dissolve per 100mL of these solvents). The sand and sawdust could then be separated using their density, as the sawdust would float and the sand would sink. Evaporation the solvent would yield the solid salt.