Question

this is a piece of gallium. gallium is a soft, silvery metal. when heated to about 30°c, gallium melts to a liquid; however, it cannot be physically separated into more than one substance nor chemically decomposed. classify gallium. element compound homogeneous mixture heterogeneous mixture

Explanation:

An element is a pure substance that cannot be physically separated into more than one substance or chemically decomposed. Gallium fits this definition as stated in the description. A compound is made of two or more elements chemically combined. A homogeneous mixture has a uniform composition but can be separated physically. A heterogeneous mixture has a non - uniform composition and can also be separated physically. Since gallium cannot be separated or decomposed further (as per the given info), it is an element.

Answer:

element