Question

2.020) which three statements are true regarding mixtures?
some mixtures maintain the physical properties of their substances.
the materials in a mixture can be separated.
a mixture is formed or separated by chemical processes.
a mixture is formed or separated by physical processes.
mixtures have proprieties that are different from the elements that form them.

Explanation:

• Some mixtures maintain the physical properties of their substances: In a mixture, especially a heterogeneous mixture, the components can retain their physical properties. For example, in a mixture of sand and water, sand has its own physical properties (like texture, color) and water has its own (like liquidity, transparency).
• The materials in a mixture can be separated: Mixtures can be separated by physical methods. For instance, a mixture of salt and water can be separated by evaporation (a physical process where water evaporates leaving salt behind).
• A mixture is formed or separated by physical processes: As mentioned above, processes like filtration (for separating solids from liquids in a mixture), evaporation (for separating a soluble solid - liquid mixture) are physical processes. Chemical processes involve the formation of new substances (like in a chemical reaction), which is not the case for mixtures.

Answer:

Some mixtures maintain the physical properties of their substances, The materials in a mixture can be separated, A mixture is formed or separated by physical processes.