Sugar is made of carbon, hydrogen, and oxygen atoms. Sugar is A a compound because its parts cannot be separated through physical means. B an element because it is a pure substance whose parts cannot be separated. C a mixture because it is made of different kinds of atoms. D a solution because it dissolves when mixed with water.

A a compound because its parts cannot be separated through physical means.

Explanation:

The sugar is a compound because its parts cannot be separated through physical means.

A compound is a substance composed of two or more kinds of atoms joined together in a definite grouping.

The properties of a compound are distinct from those of the elements that makes them up.

A compound and an element are both classified as pure substances due to the homogeneity in their composition.

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1.from liquid state to gaseous state is evaporation 3.solid to liquid is melting 5. solid to gaseous state is sublimation 6. gas to solid state is decomposition 7. a change of state is known as the states of matters