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5 Written questions

5 Matching questions

  1. solute
  2. Isotopes
  3. Acids
  4. Exchange reactions
  5. Enzyme(catalyst)
  1. a functional proteins that act as biological catalysts. A catalyst is a substance that increases the rate of a chemical reaction without becoming part of the product or being changed itself.
  2. b Atoms with the same number of protons and electrons but vary in the number of neutrons they contain.
  3. c the dissolved substance in a solution.
  4. d A substance that can release hydrogen ions (H+) in detectable amounts. having a sour taste and can dissolve many metals of burn a hole in your rug. pH below 7
  5. e Involve both synthesis and decomposition reactions. AB+C->AC+B and AB+CD->AD+CB

5 Multiple choice questions

  1. a homogenous mixture of two or more components.
  2. Bond formed from molecules where atoms share electrons.
  3. When two or more different atoms bind together to form a molecule.
  4. the main building material of all cells.
  5. The ability to do work or to put matter into motion.

5 True/False questions

  1. Deoxyribonucleic acidDetermine what type of or


  2. Adenosine triphospate (ATP)Occurs when a molecule is broken down into smaller molecules, atoms or ions. AB->A+B


  3. Chemical reactionOccur whenever atoms combine with or dissociate from other atoms.


  4. BasesThe building blocks of elements.


  5. pHCharged particles