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Physical and Chemical Properties of Matter Unit 1 Lesson 2 Properties of Matter Physical Education What are physical properties of matter? • A characteristic of a substance that can be observed without changing the identity of the substance is called a physical property. • All of the senses can be used to observe physical properties. Copyright © Houghton Mifflin Harcourt Publishing Company Unit 1 Lesson 2 Properties of Matter What are physical properties of matter? • Mass and volume are physical properties. How much matter is in an object… How much space an object takes up Copyright © Houghton Mifflin Harcourt Publishing Company Density • The amount of mass in a given volume Odor: how a substance smells Sweet, fruity, stinky, fresh, powdery, musty Texture: how a substance feels to the touch smooth rough soft Color: the varying wavelengths of visible light Hardness: - refers to how easy it is for an object to change its shape, break apart or be scratched. ROCK – very hard Play-dough – Soft and squishy States of Matter • The state of matter is the physical form of the matter. The 3 states of matter are… LIQUID • Electrical conductivity is a measure of how well electric currents move through a substance. Wood does not turn light on Metal Thumbtacks turn light on • Thermal conductivity is the rate at which a substance transfers heat. The butter melts on the metal spoon, just a little on the wooden spoon and not at all on the plastic spoon. The metal spoon conducts the heat of the water very well. Copyright © Houghton Mifflin Harcourt Publishing Company • Solubility is the ability of a substance to dissolve in another substance. • Malleability is the ability of a substance to be rolled or pounded into various shapes. TO Aluminum Aluminum Foil • Ductility is the ability of a substance to be pulled into a wire or thread. WIRE Paperclip Thread • Luster is how shiny or dull an object is…. • The melting point of a substance is the temperature at which it changes from a solid to a liquid. • The boiling point of a substance is the temperature at which the substance begins to turn from a liquid to a gas. What are chemical properties of matter? • A chemical property describes the ability of a substance to change into a new substance with different properties. • Flammability is the ability of a substance to burn. • Reactivity is the ability of a substance to interact with another substance and form one or more new substances. Metal or Food reacting with oxygen in the air