Which term refers to chemically bonded elements in fixed proportions?

Which term refers to chemically bonded elements in fixed proportions?

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

Answer: (A)

Compounds are substances formed when atoms of different elements bond together in definite, whole-number ratios. This fixed composition means the substance has a consistent formula and properties that are different from the elements it’s made from. For example, water is always two hydrogen atoms bonded with one oxygen atom, and table salt is always one sodium for one chlorine. The bonding in compounds creates a new substance with its own characteristics. An element is a pure substance made of a single kind of atom, not a bonded combination. Matter is a broad category that includes elements, compounds, and mixtures, so it’s not specific to bonded ratios. Insulators describe how well a material conducts electricity or heat, which is a property, not a description of chemical bonding or fixed proportion.

Compounds are substances formed when atoms of different elements bond together in definite, whole-number ratios. This fixed composition means the substance has a consistent formula and properties that are different from the elements it’s made from. For example, water is always two hydrogen atoms bonded with one oxygen atom, and table salt is always one sodium for one chlorine. The bonding in compounds creates a new substance with its own characteristics.

An element is a pure substance made of a single kind of atom, not a bonded combination. Matter is a broad category that includes elements, compounds, and mixtures, so it’s not specific to bonded ratios. Insulators describe how well a material conducts electricity or heat, which is a property, not a description of chemical bonding or fixed proportion.