A Combination of Sugar Granules and Iron Filings is Best

Question

A combination of sugar granules and iron filings is best described as a(n):
A) mixture.
B) colloidal suspension.
C) tincture.
D) isotope.

Accepted Answer

A combination of sugar and iron filings is a physical mixture, meaning the two substances are combined but not chemically bonded together. A colloidal suspension involves particles mixed with a liquid, but the particles in this case would need to be much smaller than the sugar granules and iron filings. A tincture involves a solution with a solute dissolved in a solvent, which is not the case here. Isotopes are different forms of the same element with different numbers of neutrons, which is not relevant to this mixture.