A mixture is a combination of I give
I need the answer now plz

two or more pure substances in
which each pure substance retains
its individual chemical properties.
A mixture is physically, not
chemically, combined.
Example: salt and sugar
combined together in a bowl
I need 2 more examples

Sand and water

Oil and sand

Explanation:

A mixture, has rightly stated in this question, is a substance composed of two or more substances combined physically rather than chemically. In a mixture, each constituent retains its chemical properties i.e. the chemical properties of none of the substances in a mixture is altered. This serves as the basis for the physical separation of a mixture.

One example of mixture has been given in this question i.e salt and sugar combined together in a bowl. This represent a mixture because the sugar is not chemically combined to the salt, hence, each can easily be separated. This is the same for any other mixtire. More examples include:

Sand and water

Oil and sand

Salt and water (salt solution)

Petroleum or crude oil

the answer is c.the valence of the atoms combine .