Chapter 6-1 , Part 2

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Chapter 6-1 , Part 2
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Chemical Reactions

• When bonds of atoms form or break
• Forms new compounds

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Chemical reactions cont

• Metabolismhow quickly or slowly your chemical
  reactions occur

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Chemical Equations

• CH4 2 O2 CO2 2 H2O
• Reactantsleft side of arrow
• Atoms/compounds that are broken apart or formed

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Chemical Equations cont

• CH4 2 O2 CO2 2 H2O
• Productsright side of arrow
• What is made during chemical reaction
• Atoms cannot be created or destroyed
• They can be rearranged

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How to read a compound

• Ex C12H22O11 (Table sugar)
• 1 molecule of sugar
• 12 Carbons
• 22 Hydrogens
• 11 Oxygen

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Mixture

• Combine substances but they stay separate
• Ex Lucky Charms

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Solution

• When one substance dissolves in another
• Ex Kool-Aid
• Solutesdissolve
• Ex Kool-Aid packet and sugar
• Solventdoes the dissolving
• Ex Water

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pH Scale

• Measure of acids and bases

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pH scale

• Scale 0-14

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pH scale

• O-6.999999 Acid
• 1 strong acid (lemon)
• 6 weak acid (milk)

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pH scale

• If the pH is exactly 7 Neutral
• Ex Water

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pH scale

• 7.000001-14 Base
• 7.1 weak base (eggs)
• 14 strong base (household cleaners)