7 Mudripic Choice I point Which of the following matches the description "two substances present, two phases present"? elements compounds heterogeneous mixtures homogeneous mixtures 8 Multiple Choice 1 point An element is a substance that:

Let's address each question one by one. ### Question 7: "two substances present, two phases present" To determine which option matches the description "two substances present, two phases present," we can analyze the options: 1. **Elements**: These are pure substances that cannot be broken down into simpler substances. They consist of only one type of atom and do not have multiple phases. 2. **Compounds**: These are substances formed when two or more elements chemically combine in fixed proportions. They are uniform throughout and do not have multiple phases. 3. **Heterogeneous mixtures**: These consist of two or more substances that are not uniformly distributed. They can have distinct phases (e.g., oil and water), which means they fit the description of having "two substances present, two phases present." 4. **Homogeneous mixtures**: These are mixtures that are uniform in composition and appearance. They do not have distinct phases. **Conclusion**: The correct answer is **heterogeneous mixtures**. --- ### Question 8: "An element is a substance that:" An element is defined as a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom and is characterized by its unique properties, such as atomic number and mass. **Conclusion**: An element is a substance that cannot be decomposed into simpler substances and consists of only one type of atom. If you have specific answer choices for this question, please provide them for a more precise response.