Physical and Chemical Properties and Changes. Physical Properties ► Are determined by the use of the. ► They are a of an object. five senses description.

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Presentation transcript:

Physical and Chemical Properties and Changes

Physical Properties ► Are determined by the use of the. ► They are a of an object. five senses description

Examples of Physical Properties Color Smell Taste Hardness State of Matter Boiling, Freezing, or Melting Point

Physical Changes ► a change that occurs changing the of the substance. changing the of the substance. ► ____ new substances are formed. without identity No

Examples of Physical Changes ► Change in size, shape, or color ► Pencil shavings ► Torn Paper ► Crushed ice ► Sugar dissolved in water ► Painting a wall

Chemical Properties ► Are determined by a substance ’ s ability to with other substances. react

Chemical Changes ► a change that occurs that the of a substance to change; something is formed. ► New substances with properties are formed causes identity new

Examples of Chemical Properties The ability to react with - The ability to react with The ability to catch fire () air rust tarnish corrode rot water/acids flammability

Reactions between Substances ► Sodium + chloride = salt ► Silver + sulfer in the air = tarnish

Reactions with Oxygen ► OXIDATION ► Iron + Oxygen = rust

Reactions with Acid ► Vinegar + baking soda = release of Carbon Dioxide Gas

Evidence of Chemical Change New ________appears Bubbbles or ________ Precipitate forms (____ material) _____ is produced ______ is produced ______ is given off Difficult or impossible to __________ color fizzing solid reverse Heat Light Sound

Other Examples ► Wood burning ► Metal rusting ► Food digesting ► Gasoline burning ► Cake baking

Physical or Chemical Property? ► The ability of a nail to rust. Chemical Property

Physical or Chemical Property? ► The shape of a leaf. Physical Property

Physical or Chemical Property? ► The ability of wood to burn. Chemical Property

Physical or Chemical Property? ► The hardness of a diamond. Physical Property

Physical or Chemical Property? ► The color of a sunset. Physical Property

Physical or Chemical Property? ► The volume of your coke. Physical Property

Physical or Chemical Property? ► Ability of gun powder and fire to explode. Chemical Property

Physical or Chemical Property? ► The mass of two camels. Physical Property

Physical or Chemical Change? ► Water evaporates from the ocean.

Physical or Chemical Change? ► The yolk of an egg, which contains sulfur, causes tarnish to form on silver.

Physical or Chemical Change? ► The ice on a lake melts to become water in the lake.

Physical or Chemical Change? ► Charcoal in a fire turns to ash after several hours.

Physical or Chemical Change? ► A pencil is sharpened in a pencil sharpener, leaving behind shavings.

Physical or Chemical Change? ► A battery makes electricity to turn on a flashlight.

Physical or Chemical Change? ► A bicycle rusts when left in the rain.

Physical or Chemical Change? ► A shirt is accidentally torn in the washing machine.

Physical or Chemical Change? ► A log is split in two by an axe.

Your Turn!