Answer:homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition with visible differences in its components. Five examples of homogeneous mixtures are saltwater, air, vinegar, steel, and sugar dissolved in water. Five examples of heterogeneous mixtures are salad, pizza, sand and water, oil and water, and concrete. Homogeneous Mixtures:1. Saltwater:When salt dissolves in water, it forms a uniform mixture where the salt is evenly distributed throughout the water. 2. Air:A mixture of gases like nitrogen, oxygen, and other trace elements forms a uniform composition. 3. Vinegar:A solution of acetic acid and water, where the acid is evenly distributed. 4. Steel:An alloy of iron and other metals like carbon, nickel, or chromium, forming a uniform solid mixture. 5. Sugar dissolved in water:The sugar particles are evenly distributed throughout the water. Heterogeneous Mixtures:1. Salad:Different ingredients like lettuce, tomatoes, cucumbers, etc., are not uniformly distributed. 2. Pizza:A combination of different toppings (cheese, pepperoni, vegetables) that are not evenly distributed. 3. Sand and water:Sand particles settle at the bottom, making the composition non-uniform. 4. Oil and water:Oil forms a separate layer on top of the water, indicating a non-uniform mixture. 5. Concrete:A mixture of cement, sand, and gravel, where the components are not evenly distributed.