Which term describes chemically bonded elements in fixed proportions?

Which term describes chemically bonded elements in fixed proportions?

• A. Elements
• B. Matter
• C. Compounds
• D. Insulators

Answer: (C)

Chemically bonded elements in fixed proportions describe compounds. When elements join by chemical bonds, they form a new substance with a definite composition, like water (H2O) or table salt (NaCl), where the ratio of elements is fixed and cannot vary. Elements are pure substances made of one kind of atom. Matter is the broad category that includes elements, compounds, and mixtures. Insulators describe a material’s electrical behavior, not its composition. In mixtures, components are just physically mixed and their proportions can vary, and they’re not held together by chemical bonds. So the term that fits is compounds.

Chemically bonded elements in fixed proportions describe compounds. When elements join by chemical bonds, they form a new substance with a definite composition, like water (H2O) or table salt (NaCl), where the ratio of elements is fixed and cannot vary. Elements are pure substances made of one kind of atom. Matter is the broad category that includes elements, compounds, and mixtures. Insulators describe a material’s electrical behavior, not its composition. In mixtures, components are just physically mixed and their proportions can vary, and they’re not held together by chemical bonds. So the term that fits is compounds.