Question

1. compare and contrast a mixture and a compound. how are they alike? how are they different? explain
2. compare and contrast a heterogeneous mixture (solution) and a homogeneous mixture. how are they alike? how are they different? explain.

Explanation:

1. Mixture vs Compound

• Alike: Both are composed of two or more substances.
• Different:
• A compound has a fixed chemical composition (e.g., \(H_2O\) always has a 2:1 ratio of hydrogen to oxygen atoms). It is formed by a chemical reaction.
• A mixture has a variable composition (e.g., air can have different amounts of oxygen, nitrogen, etc. in different environments). It is formed by a physical combination.

1. Heterogeneous Mixture vs Homogeneous Mixture

• Alike: Both are mixtures (physical combinations of substances).
• Different:
• A heterogeneous mixture has a non - uniform composition. You can see the different parts (e.g., a mixture of sand and water).
• A homogeneous mixture (solution) has a uniform composition throughout. You cannot see the individual components (e.g., saltwater, where the salt is evenly distributed in the water).

Answer:

1. Mixture and compound are alike as both are made of two or more substances. They differ as compound has fixed composition (chemical reaction product) and mixture has variable composition (physical combination).
2. Heterogeneous and homogeneous mixtures are alike as both are mixtures. They differ as heterogeneous has non - uniform composition (visible parts) and homogeneous has uniform composition (no visible parts).