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4 Written questions

3 Multiple choice questions

  1. homogenous mixture in which water is the solvent
  2. pale, green, poisonous gas, has an odor, nonmetal, very reactive
  3. colorless, odorless, tasteless gas, lightest element, most abundant element in the universe, nonmetal, unreactive

3 True/False questions

  1. carbonchemical name is dihydrogen monoxide, covers 70% of the earth's surface, makes up 70% of the mass of the human body, occurs in all 3 common states of matter, is stable


  2. sodiumtwo dangerous elements can combine to form a ______ (or safe) substance


  3. oxygencolorless, odorless, tasteless gas, makes up 21% of air, reacts with materials that burn in air, combines with many other elements