Physical and Chemical Properties and Changes

Physical Properties:

The characteristics of a substance that can be observed without changing the identity of the substance.

Chemical Properties:

Chemical properties describe how substances can form new substances.

Physical Change:

Physical change is a change that in the physical properties of a substance but, does not change the identity of the substance.

Physical Changes

• Clues of Physical Changes:

• A change in shape.• A change in size.• A change in the state or phase of matter.• Dissolving• Sometimes a color change.• Melting, freezing, boiling, evaporation,

condensation, and sublimation.

Scientific Terms• Malleability

• Ductility

• Luster

• Solubility

• Viscosity

• Buoyancy

• Density

• Mass

• Volume

Examples of Physical Changes:

• Ice melting

• A pencil sharpened

• Water boiling

• The formation of dew

• Dissolving Kool-Aid

• A candle melting

Examples of Physical Changes:

Chemical Change:

Chemical change is the change of one substance into another substance.

Chemical Changes

• Clues of Chemical Changes:

• Foaming, fizzing.• A change in odor.• Rapid production of heat, light, or sound.• Color change.• Formation of precipitate.• New substance formed.

Scientific Terms

• Flammability

• Combustibility

• Oxidation

• Reactivity

Examples of Chemical Changes:

• Photosynthesis• Fireworks exploding• Yeast bread rising• A bike rusting• Antacid dissolved in water• Anything burning• Rotting food• Silver tarnishing

Examples of Chemical Changes