Chemistry!

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Chemistry!

• The study of the composition, structure,
  properties, and reactions of a substance.

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Matter
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States of matter

• Solid

The structure and the volume are defined.
Particules have energy to vibrate. Strong
attraction between atomes.
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States of matter

• Liquid

The volume is defined but the structure is not.
Particules can move slightly but the force of
attraction is still great
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States of matter

• Gas

The volume and the structure are not defined
Particules have enough energy to counterbalance
the force of attraction so they can move
independantly.
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Physical properties

• Physical properties can be observed without
  changing the type of matter.
• Examples of physical properties include
• Texture -- Shape
• Size -- Color
• Odor -- Volume
• Mass -- Weight
• density --boiling point

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Chemical properties

• Chemical properties describe how a substance
  changes into a new substance.
• Ex
• ability to burn
• ability to react with another substance

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Physical changes

• When objects undergo a change that does not
  change their chemical nature.
• Theoretically reversible.
• Ex Making a baseball bat. Wood is crafted into a
  shape. The physical properties have changed but
  the chemical nature of the wood has not been
  altered.

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Chemical changes

• When substances become new or different
  substances.
• Ex Fireworks are actually metals such as
  magnesium and copper that change chemically as
  they light up the night skies with their
  fantastic colors.
• To identify a chemical change look for observable
  signs such as color change, bubbling and fizzing,
  light production, smoke, and presence of heat.

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The Periodic Table

• Groups

• Periods

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Alkali metals
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Alkaline metals
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Transition Metals
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Lanthanides
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Actinides
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Other Metals
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Noble Gases
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Halogens
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Hydrogen
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Other Non-metals
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