reflecting and conductivity

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Across
  1. 1. to a thing multiple times
  2. 3. the material that is cheaper than gold
  3. 6. the grey and shiny material
  4. 7. the orange material that is used for wires
  5. 8. to see yourself
Down
  1. 1. measures electric charge and heat
  2. 2. shows your reflection
  3. 4. the weakest material in Minecraft
  4. 5. is a material that is explosive