Physical and Chemical Properties and Changes

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Physical and Chemical Properties and Changes
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Physical PropertiesThe characteristics of a
substance that can be observed without changing
the identity of the substance.
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Chemical PropertiesChemical properties
describe how substances can form new substances.
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Physical Change Physical change is a change
that in the physical properties of a substance
but, does not change the identity of the
substance.
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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.

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Scientific Terms

• Malleability
• Ductility
• Luster
• Solubility
• Viscosity
• Buoyancy
• Density
• Mass
• Volume

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Examples of Physical Changes

• Ice melting
• A pencil sharpened
• Water boiling
• The formation of dew
• Dissolving Kool-Aid
• A candle melting

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Examples of Physical Changes
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Chemical Change Chemical change is the change
of one substance into another substance.
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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.

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Scientific Terms

• Flammability
• Combustibility
• Oxidation
• Reactivity

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Examples of Chemical Changes

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

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Examples of Chemical Changes