Matter is the different objects around us, such as air, soil, water, gas, or a total of substances books. Our own it is a matter. Animals and plants, it is a matter, the matter will have two properties need to address. If we remove the stones put in cardboard boxes, one individual cubes. In the end, the stones are full of boxes. Could not insert stones again because the stones like that is so full of boxes or cups that we look to see if there are actually empty, the air inside, but we cannot see it. Try removing one piece of paper. Put into glass butt naked and then boycotted the Cup in the water tank or tub. Pressing the glass sunk in water for a few moments, so excluding glass straight up to see that the paper is not wet, because the water into the glass does not. That indicates that there is something in the glass is air, so air would like to address is the water into the glass do not have weight. Matter, everything must have a weight, such as paper, we may not feel it, but if they try to lift the heavy paper books 10 books, he felt it was a paper weight or take a ball that has not been placed on the bellows of the scale and see how heavy is it? Afterward, lead the ball to the cylinder, the air filled ball and place on a scales again. To see that this time the ball is heavier than the first time. Show the weather added to the ball.
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