Question

name: alexis doumiguer date: 9/4/25 period: 4 lab quiz: separation of a mixture 1. which of the following separation methods would you use to separate salt dissolved in water? a. filtration c. distillation b. evaporation (boiling) d. chromatography 2. which of the following is not a physical property that can be used for separating a mixture. a. density c. solubility b. boiling point d. flammability 3. how would you separate mud in water? a. filtration c. distillation b. chromatography d. centrifuge 4. describe the term decanting - a separation method. i do not know 5. was there a point in the lab that you had a homogeneous mixture? what point was it? i do not know

Explanation:

1. Evaporation (boiling) can be used to separate salt - water mixture as water evaporates leaving salt behind. Filtration is for separating solids from liquids where the solid is insoluble, distillation is more complex for separating based on boiling points of multiple components, and chromatography is for separating mixtures based on different affinities for a stationary and mobile phase.
2. Flammability is a chemical property as it involves a substance reacting with oxygen in a combustion reaction. Density, boiling point, and solubility are physical properties used in separation.
3. Filtration can be used to separate mud in water as mud is an insoluble solid in water. Chromatography is not suitable for this simple solid - liquid separation, distillation is over - complicated for this case, and centrifuging is usually for separating substances with different densities in a more complex liquid - liquid or liquid - solid suspension situation.
4. Decanting is a separation method where a liquid is carefully poured off from a solid or a denser liquid without disturbing the settled solid or denser liquid layer below.
5. A homogeneous mixture in the lab could be the salt - water solution before separation as the salt is uniformly dissolved in water.

Answer:

1. b. evaporation (boiling)
2. d. flammability
3. a. filtration
4. Decanting is carefully pouring off a liquid from a solid or denser liquid without disturbing the settled layer below.
5. The salt - water solution before separation was a homogeneous mixture.