Which term describes a substance that consists of a single type of atom?

• A. Compound
• B. Solution
• C. Mixture
• D. Element

Answer: (D)

Verified step by step guidance

1. Understand the definitions of the given terms: A compound is a substance made of two or more different elements chemically bonded together.
2. A solution is a homogeneous mixture of two or more substances where one substance is dissolved in another.
3. A mixture is a physical combination of two or more substances that are not chemically bonded and can be separated by physical means.
4. An element is a pure substance that consists of only one type of atom and cannot be broken down into simpler substances by chemical means.
5. Since the question asks for a substance consisting of a single type of atom, the correct term is 'Element'.