Chemistry and Physics Glossary Nov 19

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Across
  1. 2. Form of Radioactive decay which changes the atomic number of an atom
  2. 3. sub-atomic particle that defines what element of the atom
  3. 7. A reaction that absorbs heat/energy
  4. 10. The energy required for molecules to collide with each other and break old bonds (absorbs energy) and/or make new ones (releases energy)
  5. 12. The theory of when molecules of reactants collide
  6. 14. sub-atomic particle which changes the atoms mass, but not its atomic number
  7. 15. Highly penetrating form of radioactive decay which is a wave, not a particle
  8. 18. sub-atomic particle with a negligible relative atomic mass
  9. 19. SI Unit of work or energy
  10. 20. Hydrocarbons with the formula CnH2n+2
Down
  1. 1. His principle states that a system at equilibrium will adjust itself to counteract any applied change
  2. 4. the action of purifying a liquid by a process of heating and cooling
  3. 5. occurs when a forward and reverse reaction are occurring at the same rate
  4. 6. SI unit of radioactive activity
  5. 8. an atom with a different charge due to losing or gaining electrons
  6. 9. substances that are formed by a chemical reaction, they are found on the right side of a chemical equation
  7. 11. Form of radioactive decay which change the Atomic Mass and Number of an atom
  8. 13. An atom with a different mass number than usual due to losing or gaining Neutrons
  9. 16. SI Unit of force
  10. 17. half life is how long half of this type of nuclei need to decay