5.2 What are Physical Properties?

Physical Properties  -Can be observed or measured without changing the composition of matter. -Physical properties are used to observe and describe matter.

Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others. The three states of matter are: solid, liquid, and gas. The melting point and boiling point are related to changes of the state of matter. All matter may exist in any of three physical states of matter. Solubility: how well something is able to dissolve

5 Senses Sight Smell Taste Touch Hearing

Viscosity Tendency of a fluid to keep from flowing The greater the viscosity, the slower the liquid moves

Conductivity Material’s ability to allow heat or electricity to flow

Malleability Ability of a material to be shaped or hammered without breaking

Hardness Ability of a material to be scratched

Melting & Boiling Points Each substance has their own Can be used to identify a substance

Density Density=Mass/volume Can be used to test the purity of a substance because all matter has a unique density

5.3 Chemical Properties How Substances Change

Chemical Properties Ability to produce a change in the composition of matter Can be observed only as the matter is changing

Combustibility (Flammability) Material’s ability to burn in the presence of oxygen

Reactivity How readily a substance combines chemically with other substances

Production of a Precipitate When two solutions are mixed together and a insoluble solid is created.

What are some differences between chemical & physical properties?

What properties (physical or chemical) are helpful in identifying a substance?