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4 Written questions

3 Multiple choice questions

  1. white solid at room temperature, brittle crystals, dissolves easily in water, unreactive
  2. homogenous mixture in which water is the solvent
  3. chemical 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

3 True/False questions

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


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


  3. chlorineshiny, silvery white, soft, solid, metallic, very reactive