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5 Written questions

5 Matching questions

  1. Electron Shells
  2. Substance
  3. Mixture
  4. Indicator
  5. Covalent Chemical Bond
  1. a A chemical that changes in the presence of an acid or base
  2. b Two or more materials combined together, not chemically
  3. c When atoms share electrons
  4. d 2, 8, 18, 32
  5. e A material that has a definite make up, chemically combined

5 Multiple choice questions

  1. Basing conclusions on inference rather than data
  2. Below 7 on pH scale, H3O positive ions, Turns blue litmus paper red, Corrosive, Electrolytes, Sour taste
  3. Change in the appearance or shape in the material, doesn't change the material
  4. Making an inference that is not supported by data
  5. 1. Problem
    2. Hypothesis
    3. Experiment
    4. Analyze
    5. Record

5 True/False questions

  1. Traits of BasesAbove 7 on pH scale, OH negative ions, Turns red litmus paper blue, Corrosive, Electrolytes, Bitter taste


  2. Theorya statement about something in nature that always seems to be true; based on facts and experiments


  3. ControlWhat you compare to in an experiment


  4. Heterogenous MixtureTwo or more materials mixed together, can tell them apart


  5. Chemical BondMaterial that reacts to become something else


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