what makes pure substance different from mixture
Answer (1)
Answer:A pure substance has a fixed chemical composition throughout. It cannot be separated into simpler substances by physical methods (like filtration or distillation). Examples include elements (like oxygen or gold) and compounds (like water or salt). A mixture, on the other hand, contains two or more substances that are physically combined but not chemically bonded. The composition of a mixture is not uniform and can vary. Mixtures can be separated into their components using physical methods. Examples include air (a mixture of gases), saltwater (a mixture of salt and water), and sand (a mixture of different minerals). Here's a table summarizing the key differences: Feature Pure Substance Mixture Composition Fixed and uniform Variable and non-uniform Separation Cannot be separated by physical methods Can be separated by physical methods Properties Has constant physical and chemical properties Properties vary depending on composition Examples Water (H₂O), gold (Au), oxygen (O₂) Air,A pure substance has a fixed chemical composition throughout. It cannot be separated into simpler substances by physical methods (like filtration or distillation). Examples include elements (like oxygen or gold) and compounds (like water or salt). A mixture, on the other hand, contains two or more substances that are physically combined but not chemically bonded. The composition of a mixture is not uniform and can vary. Mixtures can be separated into their components using physical methods. Examples include air (a mixture of gases), saltwater (a mixture of salt and water), and sand (a mixture of different minerals). Here's a table summarizing the key differences: Feature Pure Substance Mixture Composition Fixed and uniform Variable and non-uniform Separation Cannot be separated by physical methods Can be separated by physical methods Properties Has constant physical and chemical properties Properties vary depending on composition Examples Water (H₂O), gold (Au), oxygen (O₂) Air, saltwater, sand, soil saltwater, sand, soil
