Physical Properties Properties of Matter

Physical Properties Physical property is a property that can be observed without changing the identity of the substance. Examples: viscosity conductivity malleability hardness magnetism melting point boiling point density color

Examples of Physical Properties Viscosity of a substance is its resistance to flow. Examples: water = low viscosity honey = high viscosity Conductivity is a material’s ability to allow heat to flow. Examples: metal = high conductivity wood = poor conductivity

Examples of Physical Properties Malleability of a substance is its ability to be hammered into a thin sheet Melting and Boiling points are the temperatures at which a solid becomes a liquid and a liquid becomes a gas. Density of a substance is the ratio of its mass compared to its volume.

Physical Properties to separate mixtures Two common separation methods: Filtration – process that separates materials based on the size of their particles. Distillation – process that separates the substances in a solution based on their boiling points.

Physical Change A change in the appearance, without changing the composition of the material. Can be reversible, or irreversible Substance may seem different, but the way the atoms link up are the same. It

Chemical Properties Properties of Matter

Chemical Properties Chemical property is any ability to produce a change in the composition of matter. Examples of chemical properties . . . flammability reactivity Material’s ability to burn in the presence of oxygen. How readily a substance combines chemically with other substances.

Chemical Changes Chemical changes occur when a substance reacts and forms one or more new substances. You know a chemical change has occurred when . . . A change in color produced by reaction. Production of a gas. Formation of a precipitate.

For the next slides tell whether they show a physical or chemical change. Write the example under the correct heading in the chart.

Physical Change

Chemical Change

Chemical Change

Physical Change

Physical Change

Chemical Change