Intentions for success: We will be successful when we describe the chemical and physical properties of matter. Sept. 5, 2018 Vocab: chemical property, Warm up: What are three types of common evidence that a chemical change has occurred? formation of precipitate

Ch. 9 - Classification of Matter I. Describing Matter (45-62) Physical Property Physical Change Chemical Change Chemical Property

A. Physical Property A characteristic of a substance that can be observed without changing its identity. can be used to separate mixtures EX: magnetism, density

A. Physical Properties Examples: magnetism, density, Viscosity, Conductivity, Malleability, Hardness, melting point, boiling point, filtration, distillation, insulator Silicon dioxide is solid at room temp, Methanol is a liquid. Which has the higher melting point?

B. Physical Change A change in the form of a substance without changing its chemical makeup. properties remain the same reversible can be used to separate mixtures EX: dissolving, grinding, filtering

C. Chemical Change A change in the chemical identity of a substance. properties change irreversible Signs: color change, formation of a gas/solid, release of light/heat EX: burning, rusting

D. Chemical Property A characteristic that indicates whether a substance can undergo a specific chemical change. EX: flammability, reactivity

Create a data table for these Physical Properties Word Definition Malleable Viscosity Conductivity Insulator Flammability

Review Questions How can knowing physical properties of matter be useful? What allows mixtures to be separated by distillation? Tell me about an oven mitt. What properties does it have?