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PH SW classify substances according to their pH by conducting a lab activity. SW explain the relationship between values on the pH scale by using scientific.

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Presentation on theme: "PH SW classify substances according to their pH by conducting a lab activity. SW explain the relationship between values on the pH scale by using scientific."— Presentation transcript:

1 pH SW classify substances according to their pH by conducting a lab activity. SW explain the relationship between values on the pH scale by using scientific notation.

2 How is pH measured? Concentration of hydrogen (H+) ions in a solution. “pH” = the power of Hydrogen Litmus paper = measures the pH

3 What is the range on the pH scale for ACIDS?  Substances with a pH 6 and below.  Lower the number, stronger the acid.

4 What is the range on the pH scale for BASES?  Substances with a pH of 8 and above.  Higher the number, stronger the base.

5 What is a substance considered to be if it is neither an acid or a base?  pH around 7 (neutral)  Example: “pure water”

6 What is the difference between the numbers on the pH scale? There is a 10-fold difference.

7 What does the negative exponent indicate?  That the number is less than one.

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9  pH Scale  1x10 0 = 10 Battery Acid  1x10 –1 = 0.11 Stomach Acid  1x10 –2 = Lemon Juice  1x10 –3 = Soda  1x10 –4 = Acid Rain  1x10 –5 = Black Coffee  1x10 –6 = Urine/Saliva  1x10 –7 = “Pure” Water  1x10 –8 = Sea Water  1x10 –9 = Baking Soda  1x10 –10 = Great Salt Lake  1x10 –11 = Ammonia  1x10 –12 = Soapy Water  1x10 –13 = Bleach  1x10 –14 = Liquid Drano

10 Activity Draw the pH scale and label with examples !!!Go back to your drill and correct!!!


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