Mid Summative 5 7 Answers
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Mid Summative 5 7 Answers

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    Mid Summative 5 7 Answers Mid Summative 5 7 Answers Presentation Transcript

      • Ice cream mixture 22ºC
      • Ice/salt mixture -15 º C
      • Kitchen counter 38 º C
      22 -15 38 Energy always flows from HOT to COLD
    • COLD milk + HOT cocoa
      • Energy flows TO the milk
      • Energy flows FROM the hot chocolate
    • Particles, Kinetic Energy, & Energy Transfer
      • Kinetic energy is the energy of moving particles. The more kinetic energy a particle has, the faster it moves. When one particle collides with another, energy is transferred between particles (Hot to cold)
    • Calculating Calories 250 (50 x 5) Raise the temperature of 50 g of water 5ºC 10 (10 x 1) Raise the temperature of 10 g of water 1ºC Calories
    • MELT FREEZE EVAPORATE CONDENSE
      • K.E. increased , particles got further apart
      • K.E. decreased , particles got closer together
      • K.E. increased , particles got farther apart
      • K.E. decreased , particles got closer together
    • Equilibrium
      • Both hot and cold particles collided with each other and transferred energy. This continued to happen until all had reached a common temperature (warm) and the energy transfer between the colliding particles was equal.
    • Stuck Toys
      • Applying ice would cause the toys to CONTRACT, both the kinetic energy and the volume would decrease and the toy would get smaller
      • Applying heat would cause the toys to EXPAND, both the kinetic energy and the volume would increase and the toy would get larger
    • Vocabulary page 63
      • Mixture : 2 or more substances mixed together
      • Solution : A mixture formed when one substance dissolves in another
      • Solute : A substance that dissolves in another
      • Solvent : A substance in which a solute dissolves
    • Read How Things Dissolve Pages 49 – 53 Answer questions (page 62)