Question

mixtures can be defined as two or more elements chemically combined together. one type of element. two or more physically combined pure substances.

Explanation:

To determine the correct definition of a mixture, we analyze each option:

• The first option ("two or more elements chemically combined together") describes a compound, not a mixture. Compounds involve chemical bonding.
• The second option ("one type of element") describes an element, not a mixture. Mixtures involve multiple substances.
• The third option ("two or more physically combined pure substances") is the correct definition of a mixture. Mixtures are formed by the physical combination (no chemical reaction) of two or more pure substances, and the components retain their individual properties.

Answer:

The correct option is the one with the statement: "two or more physically combined pure substances." (Assuming the checkboxes are for selection, the box next to this statement should be checked.)