during science class, while studying mixtures, you mix together iron filings and sand. your teacher…

during science class, while studying mixtures, you mix together iron filings and sand. your teacher challenges you to separate the sand from the iron filings. how could you use the physical properties of matter to best separate the two solids? a add water to the mixture and dissolve the sand. b pick out one of the two solids by using color to guide you. c pour the mixture through a paper filter to separate the two. d use a magnet to pull out the iron filings as they are attracted to a magnet.

during science class, while studying mixtures, you mix together iron filings and sand. your teacher challenges you to separate the sand from the iron filings. how could you use the physical properties of matter to best separate the two solids? a add water to the mixture and dissolve the sand. b pick out one of the two solids by using color to guide you. c pour the mixture through a paper filter to separate the two. d use a magnet to pull out the iron filings as they are attracted to a magnet.

Answer

Brief Explanations:

Iron filings are magnetic while sand is not. Using a magnet to separate them takes advantage of this physical - property difference. Sand is insoluble in water, so option A is incorrect. Picking by color is not an efficient or reliable method, and option B is not the best. Filtering through paper will not separate them effectively as both are solids of similar particle - size range, so option C is incorrect.

Answer:

D. Use a magnet to pull out the iron filings as they are attracted to a magnet.