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5 Written questions

5 Matching questions

  1. weight
  2. period
  3. concentration
  4. concentrated solution
  5. solvent
  1. a a mixture that has a lot of solute dissolved in it
  2. b horizontal rows in the periodic table
  3. c the part of a solution present in the largest amount and that dissolves other substances
  4. d the force of gravity acting on an object
  5. e the amount of 1 material in a certain volume of another material

5 Multiple choice questions

  1. a reaction that releases heat
  2. mercury, venus, earth, mars...what are they?
  3. the heat absorbed or evolved during change of state
  4. insoluble solid that forms from a solution during a chemical reaction
  5. an object in space made mostly of ice and dust, has a tail that always goes away from the sun due to solar wind

5 True/False questions

  1. convectionmode of transfer of heat in fluids by the movement of particles

          

  2. indicatorThe biggest planet

          

  3. protostarsubstances that are formed as a result of a chemical reaction

          

  4. volumethe part of the sun where nuclear fusion occurs

          

  5. solubilitythe part of a solution present in the largest amount and that dissolves other substances