1. October 26th 2015 A Day Do Now PHYSICAL PROPERTY – First, take out your video notes. Then answer these questions, 1. What qualities or characteristics of matter have you observed? 2. In other words if I asked you to describe a coin like the one pictured here, how would you? 3. What words would you use? Homework: read pages 240-245 answer questions 4,5,7,8 on page 246.

2. What are properties? Matter has observable and measurable qualities. We can use general properties to identify substances. Two basic types of properties of matter: Physical properties and Chemical properties:

3. Physical Properties Physical properties are used to identify, describe and classify matter. – Characteristic of a substance that can be observed (using your senses) without changing the substance into something else. HardnessTextureColor OdorTasteTemperature

4. More EXAMPLES - Physical size, shape, freezing point, boiling point, melting point, magnetism, viscosity, density, luster and many more. – Viscosity - The resistance of a liquid to flowing. – Examples: – Low viscosity-water, rubbing alcohol – High viscosity-honey

5. Chemical Properties Chemical properties are characteristics involved when a substance interacts with another substance to change its chemical make-up. FlammabilityRustingCreating gas bubbles Creating a new chemical product Reactivity with water pH