Trilogy Physics: Particle Model of Matter Test

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1. What are the limitations of the Particle Model?

  • 1) Impossible to draw as the gaps are actually shapes 2) The particles aren't always Triangles, They are squares 3) The particles are the wrong shape
  • 1) They particles are actually triangles 2) The particles are too close together 3) Particles look different
  • 1) It is impossible to draw it to scale as the actual gaps between the atoms can get huge 2) Particles aren't always Spheres, they may have complex structures so that is not accurate. 3) The sizes of the particles are not taken into account.
  • 1) Particles always move 2) It can't show how big they are 3) You can't hear them
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2. Change in thermal energy equation?

  • Mass* specific heat capacity* Temperature change
  • Mass* Kinetic energy* Specific heat capacity

3. What is Meant by Internal energy?

  • The sum of potential energy of the system and the systems kinetic energy
  • The balance of Kinetic energy and Potential energy in the systems
  • The sum of Potential energy in the systems kinetic force

4. Define specific latent heat?

  • The amount of energy per kg required to change ice to water without change in temperature
  • The amount of energy per J required to change water to ice without changing the temperature

5. Which shows that heating processes increase the internal energy of a substance and that this either increases the temperature or changes the state?

  • A substance must absorb heat energy so that it can melt or boil. The temperature dosen't change during melting, boiling or freezing, even though energy is still being transferred.If you boil a kettle , the water absorbs heat energy so that it boils
  • A substance must absorb heat energy so that it can freeze. The temperature of the substance does change during melting, boiling and freezing point
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