A( a combination of substances that are combined physically but not chemically.

mixture

Explanation:

1) It can be a heterogenous or a homigeneous mixture, but it is a mxiture.

2) This is the definition and characteristics of mixtures:

i) A mixture is a combination of two or more pure substances in any proportion, in which andy substance keeps their individual properties.

ii) The fact that the substances are in any proportion and that they keep their individual properties means that they are combined physically but not chemically.

iii) Hence, the substances may be separated by physical means.

Those concepts permit you to differentiate a mixture from a chemical compoud (a kind of pure substance).

As mentioned above the mixtures may be homogeneous (like a solution of sal in water) or heterogeneous (like a mixture of rocks and leafs). But this is not part of the question.