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3 Written questions

3 Multiple choice questions

  1. a substance being dissolved in the liquid
  2. are a special class of proteins that act as a catalyst for many of the chemical reactions that support life.
  3. when one substnace is dissolved in another, resulting in a physical change.

2 True/False questions

  1. atomsubstances that tast sour and have a pH level under 7


  2. neutralThe basic building blocks of matter


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