Which two terms represent major categories of compounds?

• A. Ionic and covalent
• B. Homogeneous and heterogeneous
• C. Acids and bases
• D. Elements and mixtures

Answer: (A)

Verified step by step guidance

1. Understand that compounds are substances formed when two or more elements chemically combine in fixed ratios.
2. Recognize that compounds can be broadly classified based on the type of bonding between atoms: ionic bonds and covalent bonds.
3. Ionic compounds form when electrons are transferred from one atom to another, typically between metals and nonmetals, resulting in charged ions.
4. Covalent compounds form when atoms share electrons, usually between nonmetal atoms, creating molecules.
5. Therefore, the two major categories of compounds are 'Ionic' and 'Covalent' based on their bonding nature.