01evaporation experiment
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This document summarizes an experiment to observe what happens to water when it is warmed. The experiment involves filling a measuring jug with 100ml of water and pouring it into a dish, then placing the dish on a radiator. As the radiator warms the water, some of the water begins to change into water vapor and evaporate. Eventually, all of the water will evaporate and change into water vapor in the air.
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Water can exist in three forms: solid, liquid, and gas. Solid ice forms when water freezes; liquid water is found in places like faucets and rivers; and gas water vapor forms when water evaporates due to heat. Water changes between these three forms through the processes of evaporation, condensation, and freezing. Evaporation turns liquid water into an invisible gas, condensation turns gas back into liquid, and freezing turns liquid into solid ice.
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Water can exist in three states: as a liquid, which takes the shape of its container; as a solid like ice or snow; and as an invisible gas called water vapor, which forms clouds and steam. Water changes between these states through the addition or subtraction of heat, with solids melting into liquids and liquids evaporating into vapor when heat is added, or liquids freezing into solids when heat is removed.
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2. Heat is transferred through conduction, convection, and radiation by solids, liquids, and gases. Materials that conduct heat well are called conductors, while poor conductors are called insulators.
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Boemo ba metsi ka ho fapana
Mona re tlo bua ka metsi boemong bo fapaneng ba mocheso ( different temperatures ),joalokaha re tseba hore metsi ke bophelo.
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The document discusses the classification and properties of matter. It defines matter as anything that has mass and takes up space, and classifies matter as solids, liquids, or gases based on its physical properties. It explains that all matter is made of very tiny particles that are in continuous motion, and the properties of the three states depend on factors like the spaces between particles, the forces of attraction between them, and their movement. It also describes various changes of state that occur with changes in temperature or pressure, such as melting, boiling, condensation, and sublimation.
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The document discusses a class' inquiry learning project about changes. The students explored how matter changes when heated or cooled by doing experiments with flour, popcorn, jelly crystals, margarine, and ice cubes. They noticed that heating causes solids to melt and liquids to evaporate, while cooling causes liquids to solidify. The students also made ice cream by freezing a mixture of cream and condensed milk.
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Conduction is the transmission of heat from one object to another object in physical contact with it. When a hotter object touches a cooler object, heat will transfer from the hotter object to the cooler object. Metals are good conductors of heat while non-metals are not. Convection is the transfer of heat by the circulation or movement of fluids like liquids and gases. In convection, hot fluids rise and cool fluids sink due to differences in density. This circulation pattern transfers heat and will continue until the heat source is removed or the fluid evaporates.
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01evaporation experiment
- 2. We want to see what will happen to We will need: water when it is warmed. a dish, water a measuring jug, and a radiator.
- 3. To see what happens to water when it is warmed we will need to: Fill the measuring jug up to 100ml.
- 4. Pour the water into the dish.
- 5. Then place the dish carefully on a radiator.
- 6. What do you think will happen? Keep checking the dish. Can you see a difference?
- 7. The water is evaporating. Some of The heat the water from the begins to radiator is change into warming the water water. vapour.
- 8. Water vapour is a gas. We cannot see it but it rises up from the warm water. As the water gets warmer more water vapour is formed.
- 9. It might take a long time but, eventually, the water will all disappear. The warmed water has evaporated. Where do you think the water has gone?
- 10. The water has changed into water vapour and is in the air. Think about where it might go afterwards. What do you think will happen?
- 11. Animations available from www.animationfactory.com PCS Symbols ©Widgit Software www.communication4all.co.uk