Question

7 multiple choice 6 points the diagram depicts the atomic arrangement of two substances formed by hydrogen (h) and oxygen (o) atoms. which option correctly identifies the substances? diagram of substance 1 and substance 2 options: substance 1: mixture; substance 2: mixture; substance 1: compound; substance 2: compound; substance 1: mixture; substance 2: compound; substance 1: compound; substance 2: mixture

Explanation:

To solve this, we analyze the atomic arrangements:

• Substance 1: Contains separate molecules of \( \text{O}_2 \) (oxygen) and \( \text{H}_2 \) (hydrogen). A mixture is a combination of two or more substances (elements or compounds) that are not chemically bonded. Since \( \text{O}_2 \) and \( \text{H}_2 \) are distinct and not bonded, Substance 1 is a mixture.
• Substance 2: Contains only \( \text{H}_2\text{O} \) (water) molecules, where hydrogen and oxygen are chemically bonded in a fixed ratio (2:1). A compound is a substance formed when two or more elements are chemically bonded in a fixed ratio. Thus, Substance 2 is a compound.

Among the options, "Substance 1: mixture; Substance 2: compound" matches this analysis. (Note: The original image’s selected option seems incorrect; the correct logic leads to this conclusion.)

Answer:

Substance 1: mixture; Substance 2: compound (matching the option "Substance 1: mixture, Substance 2: compound" from the choices)