Mixtures

Question 1

What is a homogeneous mixture?

Answer 1

Uniform in structure; components can’t be distinguished or separated.

Question 2

What is a heterogeneous mixture?

Answer 2

Non-uniform in structure; components can be distinguished and separated.

Question 3

What is filtration?

Answer 3

Separates insoluble solids from liquids using a porous material like filter paper, allowing the liquid to pass through while trapping the solid.

Question 4

What is evaporation?

Answer 4

Removes a liquid from a solution, leaving behind a solid residue. The liquid is heated and converted to a gas, which then condenses elsewhere, or is allowed to escape into the air.

Question 5

What is distillation?

Answer 5

Separates liquids with different boiling points. The mixture is heated, causing the liquid with the lower boiling point to evaporate first. The vapor is then condensed and collected, leaving the other liquid behind.

Question 6

What is decantation?

Answer 6

Separates immiscible liquids (liquids that don’t mix) based on density. The denser liquid settles to the bottom, and the less dense liquid is poured off, leaving the denser liquid behind.

Question 7

What is chromatography?

Answer 7

Separates components of a mixture based on their differing affinities for a stationary phase while moving through a mobile phase. The components move at different rates, leading to their separation.