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12 * Unit-6 Matter, Measurement and Minerals, , Matter, , , , There are many things around us. Some things are living and some things are, non-living. All things, irrespective of their size and shape occupy space and have, weight., , Matter, , Matter is anything that has mass and that occupies space. All the things around, us are made up of matter. Things are heavier or lighter due to their mass. Mass is, that property of matter that tells about the lightness or heaviness of any object., For example, if you hold your book in one hand and pencil in the other, you will, feel that the pencil is lighter than the book. This is because the pencil’s mass is, lesser than the mass of the book., , Similarly, all objects occupy some space. For example, the books in your bag, the, , milk in the glass, the air in the balloon all occupy some space., <a, , 4 Ss, Bag Balloon Glass of milk, All objects occupy space., , States of Matter, , Matter exists in three forms or states. These are solid, liquid and gas. Things like, , book, stone and table are solids. Things like water, milk, gum and oil are liquids, , and things like water vapour, oxygen and hydrogen are gases., , Solid, , A solid is anything that holds a particular size and shape. An apple, a block of, , wood and a penny are all solids. The only way they can change their shape is by, 63