Physical and chemical changes
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Physical and Chemical Changes PowerPoint PPT Presentation


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Physical and Chemical Changes. Change is all around!!!!. Physical property – a characteristic that can be measured or detected by the senses. Physical Change. Physical change – a change in the size, shape, or state of matter with no new matter being formed.

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Physical and Chemical Changes

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Physical and Chemical Changes

Change is all around!!!!


Physical property – a characteristic that can be measured or detected by the senses.


Physical Change

  • Physical change – a change in the size, shape, or state of matter with no new matter being formed.

  • The substances may be changed to another phase (i.e. gas, liquid, solid) or separated or combined.


Physical Change

  • Examples:

  • when ice melts

  • when sulfur is mixed with iron filings.

  • breaking a glass

  • dissolving sugar in water

  • Cutting a piece of paper or wood


Common Examples of Physical Change

1.ripped paper2.boiling water3.pumping oil4.smashing your car5.shattering a light bulb6.sharpening a pencil7.freezing water8.cutting iron9.rising of bread dough10.melting iron


  • Chemical property – the ability or tendency of a material to change its chemical makeup.


Chemical Change

  • Chemical change – a change in matter that results in new substances being formed.

  • A chemical change is irreversible.

  • Chemical reaction- a reaction happens when two or more molecules interact and the molecules change.


Chemical Change

  • Examples:

  • Magnesium wire burns producing white ash of MgO

  • When Zinc is combined with Hydrochloric Acid

  • When food is metabolized in the body

  • Burning a piece of paper or wood


Common Examples of Chemical Change

1.rusting of iron2.exploding of dynamite3.digestion of food4.moldy cheese5.souring milk6.reaction of chlorine with sodium7.wood rotting8.flammability9.things that react with water to form a gas10.things that react with a base to form water


You are now ready to play

“Name That Change!”

How To Play

For each item, you will need to tell whether a physical or a chemical change has taken place!


physical


chemical


physical


physical


chemical


physical


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