Across
- 2. a quantity that has magnitude only
- 3. the change of state of a substance from a solid to a gas missing out the liquid phase
- 5. three of these are released when a uranium nucleus splits
- 7. energy to change 1kg of substance from liquid to gas is specific latent heat of ....
- 8. the splitting of atomic nuclei by a chain reaction
- 10. the name given to two atoms that have the same atomic number but different mass numbers
- 12. the unit for electric charge
- 15. the unit of radioactivity
- 17. formed when an atom gains or loses electrons
- 18. specific heat capacity is the energy needed to heat 1 ... by 1oC
- 19. energy transferred per second
Down
- 1. the exposure of an object to radiation that does not result in the object becoming radioactive.
- 4. a highly penetrating form of radiation that can pass through aluminium but is stopped by thick lead
- 6. a measure of the proportion of energy that is transferred usefully
- 9. the unit of work done
- 11. radioactive particle that has virtually no mass and a negative charge
- 13. mass divided by volumne
- 14. the blue wire in a plug
- 16. a non-ohmic conductor that only allows current to flow in one direction