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. Sawdust is a mixture.
Sawdust is solid. A gas is colorless that's why you cannot see it. If you can see sawdust it is not gas.
{Sand+Sawdust}------Sieving--->{Small particles: sand}+{Large particles: sawdust}
it sinks to the bottom
Use a magnet to separate the iron filings, filter the remaining sawdust and sugar water solution, evaporate the water from the sugar water solution.
Use a magnet to separate the iron filings, filter the remaining sawdust and sugar water solution, evaporate the water from the sugar water solution.
pepper actually floats only some goes to the bottom in a water solution so after that you would need to filter the pepper and sawdust because it is larger and then evaporate the water.
If sawdust gets wet, and is left wet for any length of time, the natural fermentation processes can generate enough heat to catch fire. A cat will bury his urine, leaving a wet volume buried in the sawdust, where it cannot evaporate, to ferment and heat up.
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.
Use a magnet to seperate the iron. Then, add water to dissolve the salt and float the sawdust. Skim off, sieve or filter the solution to seperate the sawdust. Let the water evaporate, leaving the salt behind.
No. Sawdust is a mixture.
Sawdust is matter.
The "calorific value" (assuming you mean heat of combustion) of sawdust varies somewhat depending on the kind of wood the sawdust came from. It is also influenced by the amount of moisture in the sawdust - if the sawdust is not dry, some of the heat is absorbed to heat up the water and evaporate it instead of being given off as heat. The heating value of sawdust from softwoods (like pine) is typically about 20-22 MJ kg-1 and of hardwoods (like oak and maple) about 19-21 MJ kg-1. Note that despite the similarities of these ranges, there are plenty of woods that will yield higher and lower values; for example tests on poplar trees have a range of values of 19·49 MJ kg-1.
pepper actually floats only some goes to the bottom in a water solution so after that you would need to filter the pepper and sawdust because it is larger and then evaporate the water.
Sawdust is solid. A gas is colorless that's why you cannot see it. If you can see sawdust it is not gas.
sawdust