Presentation on theme: "1 Properties of matter 2 What are properties? Characteristics used to describe an object Ex: Odor density Shapesoftness size taste Texture smell Hardnessreactivity."— Presentation transcript:
2 What are properties? Characteristics used to describe an object Ex: Odor density Shapesoftness size taste Texture smell Hardnessreactivity Flammabilityexplosive
Melting point Boiling point Vapor pressure Color State of matter Phase Texture Density Electrical conductivity Solubility Adsorption to a surface Hardness Shape Hardness Physical Properties
4 What is a physical change? Physical changes involve the changing of physical properties Type of matter remains the same
The physical properties of sodium metal can be observed or measured. It is a soft, lustrous, silver-colored metal with a relatively low melting point and low density. Hardness, color, melting point and density are all physical properties.
Chemical properties describe how a substance change into another substance. For Example, Flammability
Reaction with acids Reaction with bases (alkalis) Reaction with oxygen (combustion) Reaction with other elements Decomposition into simpler substances Corrosion
8 Chemical Changes The change of a substance into a new and different substance Also known as a chemical reaction