Monday 4/29 Check In

​Purple cabbage can be boiled in water to use as a natural indicator!

• Taste sour.

• React with metals.

• They are corrosive.

• Formulas begin with "H". (example HCl)

• All fruits and most vegetables are acidic.

• Strong acids are used chemical reactions to create certain products.

• Taste bitter

• Feel slippery.

• React with metals

• They are corrosive

• Many bases contain the hydroxide ion (OH^-).

• They are used as cleaners.

• They damage living tissue and bacteria.

  
  

• Are used as drain cleaners and disinfectants.

• Strong bases have a pH between 12 and 14.

• Weak bases have a pH between 7 and 12

• Bases are referred to as "alkaline".

• Measures the potential for hydrogen ions (H⁺) or (H₃O⁺) to form.

• The scale goes from 0 to 14.

• Acids are less than 7.

• Bases are greater than 7.

• A pH of 7 is neutral.

• As you move away from a pH of 7, the acid strength increases.

• Each number increases by a power of 10

• A pH of 6 is 10 times stronger than 7.

• A pH of 5 is 100 times stronger than 7

There is a difference of 4. The power of 10⁴ equals 10,000.

• As you move away from a pH of 7, bases increase in strength.

• A pH of 8 is 10 times greater than 7

• A pH of 9 is 100 times greater than 7.

• A pH of 10 is 1000 times greater than 7.

• When equal amounts and equal strengths of an acid and a base are mixed together, the liquids will neutralize.

• The result will have a pH of 7

• The products are water (H₂O) and a type of salt (NaCl)

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Red cabbage juice is used as a natural pH indicator

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Natural pH indicator
Red Cabbage Juice