A manufacturer makes two 100 g batches of sun cream. The masses of three of the components are shown in the table. All other components and the manufacturing conditions are the same for both batches.
| Component | Mass in batch 1 in g | Mass in batch 2 in g |
|---|---|---|
| UV-absorbing component | 15 | 15 |
| spreading agent | 4 | 2 |
| fragrance | 1 | 3 |
Explain why sun cream is described as a formulation.
Compare the expected protection, ease of spreading and scent of batch 2 with batch 1.
Use the information in the table.
102 exam-style questions on OCR GCSE Chemistry 2.1 Purity and separating mixtures, covering 2.1.1 Pure substances and melting point data, 2.1.2 Relative formula mass and empirical formula, 2.1.3 Formulations as useful mixtures, 2.1.4 Techniques for separating mixtures, and 2.1.5 Chromatography and Rf values. Each one has a worked solution and a mark scheme showing where the marks go.