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3 Written Questions

3 Multiple Choice Questions

  1. are a special class of proteins that act as a catalyst for many of the chemical reactions that support life.
  2. substances that tast sour and have a pH level under 7
  3. when one substnace is dissolved in another, resulting in a physical change.

2 True/False Questions

  1. neutralwhen one substnace is dissolved in another, resulting in a physical change.

          

  2. alkalinesolutions with pH from just above 7 to 14 with characters of a base.

          

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