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5 Written questions

5 Matching questions

  1. radioactivity
  2. Exchange reactions
  3. Acids
  4. reactant
  5. Atom
  1. a The building blocks of elements.
  2. b Involve both synthesis and decomposition reactions. AB+C->AC+B and AB+CD->AD+CB
  3. c Process of spontaneous atomic decay.
  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 a substance that takes part in and undergoes a chemical change during a reaction.

5 Multiple choice questions

  1. Bond formed from molecules where atoms share electrons.
  2. An atoms outermost electron shell.
  3. When two or more different atoms bind together to form a molecule.
  4. Regulates the acid base balance in the body.
  5. Measures the relative concentration of hydrogen and hydroxyl ions in various solutions.

5 True/False questions

  1. IsotopesAtomic particles with a positive charge.


  2. Deoxyribonucleic acidDetermine what type of or


  3. EnergyThe ability to do work or to put matter into motion.


  4. Enzyme(catalyst)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.


  5. Elementsthe liquid in which a solute is dissolved to form a solution.


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