Properties of Matter Objective: * Know substances by describing them based on their physical and chemical properties. * Classify matter by using their properties

Physical properties are characteristics of a substance that you can observe or measure WITHOUT changing the composition of the substance.

Color Texture Taste Size Shape Odor Physical properties

ViscosityDensity inability to flowmass per unit volume (m/v) Physical properties

Malleable Ductile ability to be rolled flat ability to be rolled into a wire Physical properties

Luster Hardness High luster = Shiny object Resists changing shape under force Physical properties

Heat conductivityability to conduct heat Insulator - poor heat conductor Physical properties

Boiling Point State changes from liquid to gas Melting/Freezing Point State changes from solid to liquid Physical properties

Chemical properties are characteristics of a substance that you can observe or measure that have the "potential" to change the composition of the substance.

Flammability Rusting How easily a substance will burn or ignite Ability to corrode or rust (iron + oxygen = rust) Chemical properties

Fermentation Ability to convert carbohydrates into alcohols Chemical properties

Physical Change - In a physical change, the identity of the material remains the same.

Chemical Change - In a chemical change, the material transforms to a new substance. Evidence would be color change, temperature change, bubbles, etc.

Chemical and Physical Change mixing sand and rocks mixing flour and water burning wood melting ice physical change chemical change

1Which of these best defines a chemical change? AA change that can be reversed BA change that cannot be reversed CA change that can sometimes be reversed

2Which of these best defines a physical change? AA change that can be reversed BA change that cannot be reversed CA change that can sometimes be reversed

Burning a match Baking cookies Denting a car door. Cooking an egg Boiling Water Melting of gold Rusting of iron Identify the following as Chemical Change or Physical Change Chemical ChangePhysical Change