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Matter has mass and volume. LESSON 1.1 All objects are made of matter. Matter makes up all of the objects and living organisms in the universe. Matter is anything that has mass and takes up space. Matter is made of the particles called atoms, which are to small to see. Your body is matter The air is matter Water is matter All objects are made of matter. Not everything is matter Light is not matter Light does not take up any space Sound is not matter Mass is a measure of the amount of matter Different objects contain different amount of matter. Mass is a measure of how much matter an object contains. Ex: a metal spoon vs. a plastic spoon Ex: an elephant vs. a mouse Measuring Mass When measuring mass you compare the mass of the object with a standard amount, or unit, of mass. How can you compare the masses of two objects? A pan balance Measuring Weight Weight is the downward pull on an object due to gravity. Weight is measured using a scale. The standard unit for weight is the newton (N). A common unit for weight is the pound (lb.). Measuring Weight Mass and weight are similar but not the same. Mass describes the amount of matter an object has. Weight describes how strong gravity pulls on matter. Ex: The Moon has less gravitational pull than Earth so an object will weigh less on the Moon. The same object will have the same mass on the Moon or on Earth. Volume is a measure of the space matter occupies. Matter takes up space. The amount of space that matter in an object occupies is called the object’s volume. The tubes on the right all have the same amount of volume. Determining Volume by Formula There are different ways to find the volume of an object. Ex: A BOX Volume = length x width x height V=lwh Measuring Volume by Displacement Although a rock has a regular shape, a rock does not. There is no simple formula for calculating the volume of something with a irregular shape. The method of measuring the volume of an irregular shape is called displacement. Measuring Volume by Displacement 1. Add water to a graduated cylinder. Note the volume of the water by reading the water level on the cylinder. 2. Submerge the irregular object in the water. The water will be displaced, or moved upward. Note the new volume of the water with the object in it. 3. Subtract the volume of the water before you added the object from the volume of the water and the object together. The results are the volume of the object. Measuring Volume by Displacement You measure the volume of liquid by measuring how much space it takes up in a container. The volume of a liquid is usually measured in liters (L) or milliliters (mL). 1 liter (L) = 1000 milliliters (mL) Milliliter is equivalent to cubic centimeters. 1mL = 1 cm If you had a box with a volume of one cubic centimeter and you filled it with water, you would have one millimeter of water. 3