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2 Written questions

2 Multiple choice questions

  1. A molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared
  2. The use of electricity to break a molecule down into smaller units

2 True/False questions

  1. Hard WaterWater that has certain dissolved ions in it - predominately calcium and magnesium ions


  2. CohesionThe phemonemon that occurs when individual molecules are so strongly attracted to each other that they tend to stay together, even when exposed to tension