Physical or Chemical Properties. Matter Matter is anything that takes up space and has mass.
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Transcript of Physical or Chemical Properties. Matter Matter is anything that takes up space and has mass.
![Page 1: Physical or Chemical Properties. Matter Matter is anything that takes up space and has mass.](https://reader035.fdocuments.us/reader035/viewer/2022062417/551bdbf8550346b9588b5afc/html5/thumbnails/1.jpg)
Physical or Chemical Properties
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Matter
Matter is anything that takes up space and has mass.
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Physical or Chemical
Matter can change in two ways –
physical
or
chemical.
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Physical ChangeWith a physical change no new substance is created and the original matter can be recovered.
Physical change does not change the composition of the matter.
The original matter is still present.
The substance may seem different,
but the way the atoms are linked up are the same.
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Physical Change
Physical changes include:
• Changing the shape or size
• Dissolving
• Changing from one state of matter to another
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Matter
Matter can change from one state to another by increasing or decreasing temperature or pressure.
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Five States of Matter
• Bose-Einstein Condensates
• Solids
• Liquids
• Gases
• Plasmas
We are only going toconcern ourselves about
the three states of matter,
as are common to our environment.
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Three States of Matter
Solids
Liquids
Gases
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By adding energy the state changes.
gas
+energy
liquids
+ energy
solids
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Examples of Physical Change
• water evaporating or water changing to steam
• clothes drying in a dryer
• chopping wood - wood ground to sawdust
• erosion
• rock breaking
• mixing Kool-Aid
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Chemical Change
When a chemical change takes place,
a new substance is made.
The old matter is no longer present.
The matter can not be changed back into its original state.
The way the molecules are linked up
is different when a chemical change
takes place.
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Signs of Chemical Change
• gas bubbles
• color change - leaves turning colors in the fall, rust appearing
• disappearance of color – fading fabric
• heat or light
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Examples of Chemical Changes
• fruit rotting, food spoiling • rust • decay of plants • burning wood • silver tarnishing • car burning gas • baking bread
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Practice
Number your paper 1 – 10.
Write chemical or physical
for each of the following to describe the type of change which is taking place.
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1. Is this a physical or chemical change?
dirt added to a puddle of water
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2. Is this a physical or chemical change?
making whip cream
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3. Is this a physical or chemical change?
baking soda fizzes with vinegar
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4. Is this a physical or chemical change?
sharpening a pencil
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5. Is this a physical or chemical change?
a stick broken into small pieces
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6. Is this a physical or chemical change?
sugar turns brown, then black with heat
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7. Is this a physical or chemical change?
using hot water to expand a metal cup
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8. Is this a physical or chemical change?
freezing water
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9. Is this a physical or chemical change?
cornstarch turns black with iodine
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10. Is this a physical or chemical change?toasting a marshmallow