Question

substance in which the atoms of two or more elements are combined in a fixed proportion * 2 points element homogeneous mixture compound heterogeneous mixture

Explanation:

• An element is a pure substance made of only one type of atom, so it doesn't fit.
• A homogeneous mixture has components uniformly mixed but not in a fixed proportion (e.g., salt water can have varying salt concentrations).
• A compound is a substance where atoms of two or more elements are chemically combined in a fixed proportion (e.g., water \(H_2O\) always has 2 H and 1 O atoms).
• A heterogeneous mixture has non - uniform composition and no fixed proportion of components.

Answer:

C. Compound