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5 Written questions

5 Matching questions

  1. Precision
  2. 94
  3. Chemical properties
  4. metalloids
  5. 1,000
  1. a ___________- elements that exhibit characteristics of both metals and non-metals
  2. b ______________- Properties of matter that are observed when atoms are rearranged removed replaced or added to compounds resulting in new compounds with differing physical and chemical properties
  3. c There are __ naturally occurring elements
  4. d 1 Food Calorie = ______cal
  5. e ______________ is how consistent a measurement is

5 Multiple choice questions

  1. atoms are most stable when they have 8 electrons
  2. a proton has what charge?
  3. Pure substances can be divided into what two categories
  4. Matter can be divided up into what two categories?
  5. the atomic mass on the periodic table is really the__________ __________ __________

5 True/False questions

  1. 5 10the subshell d has _ orbital(s) with a maximum of _ electrons per sublevel


  2. neutrala neutron has what charge?


  3. accuracyA ______________ is the heat energy needed to raise the temperature of 1g of water to 1degree C


  4. Quantitative observations___________- energy needed to remove an electron from the outer shell of an atom in the gaseous state


  5. ability to burn, undergo corrosion, rust, precipitategive 4 examples of chemical properties