Question

which is a characteristic of mixtures? they are chemically bonded together. they can be classified as pure substances. they have fixed ratios between their components. they can be separated by physical processes.

Explanation:

Mixtures are combinations of substances not chemically bonded. They are not pure substances and have variable component - ratios. Physical methods like filtration, evaporation can separate them.

Answer:

They can be separated by physical processes.