Formulation vs. Pure Substance: A pure substance consists of only one element or compound, whereas a formulation is a multi-component mixture.
Formulation vs. Compound: In a compound, elements are chemically bonded in fixed ratios; in a formulation, components are physically mixed and can theoretically be separated.
| Feature | Formulation | Pure Substance |
|---|---|---|
| Composition | Multiple components | Single element/compound |
| Preparation | Exact recipe/mixing | Chemical synthesis/extraction |
| Purpose | Specific functional use | Fundamental chemical unit |
Identify the 'Useful Product': If a question asks if a mixture is a formulation, check if it has a specific commercial or practical use (e.g., paint vs. muddy water).
Check for Precision: Look for mentions of 'exact quantities' or 'specific ratios' as these are hallmarks of a formulation.
Common Mistake: Do not confuse formulations with chemical compounds. Remember that the components in a formulation are not chemically combined into a new substance.
Recall Examples: Be prepared to list common examples such as alloys, medicines, fertilizers, and cleaning products.
