Which term describes a substance formed when atoms of two or more elements combine in a fixed proportion?

Which term describes a substance formed when atoms of two or more elements combine in a fixed proportion?

• A. Element
• B. Mixture
• C. Compound
• D. Pure Substance

Answer: (C)

When atoms from different elements join together in a specific ratio and form chemical bonds, they create a compound. The fixed proportion means the composition doesn’t vary, and the substance has properties that are different from the elements it’s made from. Elements are single kinds of atoms, and mixtures are blends where the components aren’t chemically bonded and can vary in proportion. A pure substance can be either an element or a compound, but the description given fits a compound because it involves two or more elements in a fixed ratio.

When atoms from different elements join together in a specific ratio and form chemical bonds, they create a compound. The fixed proportion means the composition doesn’t vary, and the substance has properties that are different from the elements it’s made from. Elements are single kinds of atoms, and mixtures are blends where the components aren’t chemically bonded and can vary in proportion. A pure substance can be either an element or a compound, but the description given fits a compound because it involves two or more elements in a fixed ratio.