Solutions are homogeneous mixtures of two or more substances. In a homogeneous mixture we cannot distinguish the different components with optical methods. The components of a solution are: 8. Solutions 26 Science uses models. Imagine the particles of matter as little balls. Prepare information cards with drawings that explain how the different substances are distributed in these mixtures. a) Water and sugar. b) Air. c) Sand and sugar. Solvent The component that is in the highest proportion . Solution A homogeneous mixture of two or more components. Solute The component (or components) that is in the lowest proportion . A B C A dilute solution has a small proportion of solute in relation to the solvent. 27 Which of these are solutions? Identify the solvent and solutes in the solutions. a) Tea with sugar. b) Air. c) Granite. d) Bronze (copper + tin). A C T I V I T I E S A concentrated solution has a large proportion of solute in relation to the solvent. When solutions are coloured , a more intense colour indicates a higher proportion of solute. CHALLENGE 24
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