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Recursos educativos
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Nivel educativo
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Competencias
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Tipología
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How mixtures are separated
EduBook Organización
- 1905 visitas
Evaporation. During evaporation, the liquid evaporates and the solid crystallises. Salt is separated from seawater at a salt factory using this method. Filtration. In filtration, the mixture is poured…
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Changes of state
EduBook Organización
- 1882 visitas
2.1. Changes of state of water Water is the best known example of a substance that occurs in the three states. Changes of state are caused by the action of heating or cooling (or changes in pressure).…
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The colours of light
EduBook Organización
- 1847 visitas
What is white light? We see the light from the Sun as white. In reality, it is made up of an infinite number of different colours. We can see this when white light passes through a glass prism or drops…
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Final self-evaluation 4 - The Hydrosphere
EduBook Organización
- 1811 visitas
Complete the text with the missing words: Water is a very good of all types of solid, and gaseous substances. Living beings absorb many substances for life because they are dissolved in . At the same…
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Water vaporisation and evaporation
EduBook Organización
- 1745 visitas
Vaporisation, or boiling, only occurs at the boiling point (100°C). The whole volume of water that is boiling vaporises. Evaporation occurs when only the particles on the surface of the liquid change…
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Reading pictures
EduBook Organización
- 1694 visitas
Look at the picture and talk about these questions. ‘Many happy returns of the day!’ is the phrase people say to a person on his/her birthday. In the painting, whose birthday is it? What elements of…
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Let's plan a trip to a castle in Scotland
EduBook Organización
- 1680 visitas
LET’S PLAN A TRIP TO A CASTLE IN SCOTLAND Work with a partner and plan your trip to Scotland. You can stay at an old castle and perhaps see a ghost! Follow this plan: Choose a castle. What is the…