Introduction to matter

Physical Science - Middle School

Introduction to matter

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Introduction to matter

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Introduction to matter

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Study Guide Introduction to matter Physical Science - Middle School

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INTRODUCTION TO MATTER What Is Matter? Matter is anything that takes up space and has mass. Some of its properties are physical and would include such things as color, volume and weight. Other properties are chemical and deal with how matter chemically reacts with other materials. An example would be what would happen to an acid if it reacted with a base. Measuring Matter The measurement of matter includes calculations of mass, volume, and length. Using the metric system, mass is calculated in grams, volume in liters and length in meters. While the weight of an object can change depending on the force of gravity, its mass is not changed by gravity. While using the metric system, prefixes are put in front of the above terms to indicate quantity. A milliliter is 1/1000 of a liter while a kiloliter is one thousand liters. A kilogram would be 1000 grams and a millimeter would 1/1000 of a meter. Lesson Checkpoint: What system of measurement is used to measure matter? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Changes in Matter Matter can undergo both physical and chemical changes. A physical change would include a change in color or a change in state. The different states of matter are solid, liquid and gas. When a physical change occurs, the substance does not change. For example, when you fry an egg, you change its physical state but it is still an egg in substance. Chemical changes are those that change the actual chemical makeup of the substance. When these occur, materials lose their identity. For example, when you make a cake, you mix an egg with the other ingredients, which together become cake batter. The egg is now transformed and is part of something else—the batter. Lesson Checkpoint: Think of one physical change and one chemical change in matter. Types of Energy Energy or the ability to do work can be classified in different ways. Energy at rest is considered to be potential energy. An example of this would be a car battery that is not in use. Energy in motion is called kinetic, an example of which would be a moving car. Energy can also take various forms. These include the energy of moving parts which is called mechanical energy. Other forms of energy include electromagnetic energy such as light, the chemical energy of a battery or the nuclear energy released from radioactive elements. Other forms are electrical and thermal or heat energy. Lesson Checkpoint: Name one type and one form of energy and give an example of each. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Changes in Energy Form Energy can be changed from one form to another. This is referred to as an energy transformation. We rely on these transformations for many important things. For example, the chemical energy of food in our body gets changed to heat us. Gasoline is burned to move a car, electricity is used to heat a toaster, and generators are turned to produce electricity. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.