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Pure substances and mixtures
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- 4. PURE SUBSTANCE Apure substance is formed only by one substance. Example: water, salt
- 5. MIXTURES A mixtureis something formed by two or more substances There are two kinds of mixtures HOMOGENEOUS MIXTURES HETEROGENEOUS MIXTURES
- 6. HOMOGENEOUS MIXTURE Inthis kind of mixture, you can’t distinguish the components Examples: Puree Coffee Milkshake Chocolate Cold tomato soup Orange juice
- 7. HETEROGENEOUS MIXTURE In thiskind of mixture, you can distinguish all the components Examples: Salad Fruit salad Paella Milk and cereals Chickpeas
- 8. QUESTIONS What’s thename of a substance formed only by one component? Which state of matter has fixed volume and different shape? What’s the name of a subtance formed by two substances in which you can distinguish them? Is milkshake a homogeneous or a heterogeneous mixture? Is salad a homogeneous or a heterogeneous mixture?
- 9. ACTIVITIES 1. Classify thesesubstances in mixtures or pure substances. 2. Classify these mixtures in homogeneous or heterogeneous GOLD – SALAD – ORANGE JUICE – WATER – CHOCOLATE – SALT - MILKSHAKE – CHOCOLATE – FRUIT SALAD - COLD TOMATO SOUP – ORANGE JUICE – SALAD – PAELLA – PUREE - COFFEE
- 10. ACTIVITIES Write the nameof the state change SOLID LIQUID GAS
- 11. JOURNAL Write anddraw three examples of heterogeneous mixture and three of homogeneous mixture.