Everything is made of matter., There are three states of matter: solids, liquids, gases., Materials have different properties., Properties can be mass, shape or volume., Mass means how heavy something is., Volume means how much space something takes., Solids have mass, shape and volume., Liquids and gases do not have their own shape., Materials can change., Changes can be reversible or irreversible., A reversible change can be undone., An irreversible change stays for good., When you ice cream starts dripping, it melts., When wood turns to ash in a fireplace, it burns., When a puddle becomes icy in winter, it freezes., When concrete dries and hardens on a new road, it solidifies., When water drops appear on the mirror when you take a hot shower, it is condensing. , When a puddle disappears on a hot day, it is evaporating..

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