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2.2  Changes of state



                         2.2  Changes of state





                       In this topic you will:

                       •    practise measuring the volume and the temperature of a liquid
                       •    learn what happens when matter changes state
                       •    investigate the temperature increase when you heat water.




                       Getting started                                                            Key words

                       With a partner, draw three diagrams to show the particle                   axis

                       structure of a solid, a liquid and a gas.                                  boil
                       Be ready to show the class when you are asked to do so.
                                                                                                  boiling point

                                                                                                  change of state
                                                                                                  condensation

                                                                                                  condense

                                                                                                  evaporation
                                                                                                  freeze

                                                                                                  measuring
                                                                                                   cylinder

                                                                                                  melt

                                                                                                  melting point
                                                                                                  meniscus

                                                                                                  steam

                                                                                                  thermometer
                                                                                                  water vapour






















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