Chemistry final word

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Across
  1. 7. imparting or exchanging of information or news..
  2. 10. measure of the amount of matter contained in or constituting a physical body.
  3. 14. to change, fail, or give way; not stable.
  4. 15. Fission:is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products,
  5. 16. colorless, odorless reactive gas
  6. 17. change which is a result or consequence of an action or other cause.
  7. 20. the chemical element with the symbol H and atomic number 1.
  8. 21. photon is a type of elementary particle
  9. 22. stable isotope of hydrogen with a mass approximately twice that of the usual isotope.
  10. 23. chemical element of atomic number 2
Down
  1. 1. separate and distinct.
  2. 2. as a source of nuclear energy.
  3. 3. chemical element of atomic number 6.
  4. 4. particular place or point.
  5. 5. close to; almost.
  6. 6. radioactive isotope of hydrogen with a mass approximately
  7. 7. container, typically made of glass or plastic
  8. 8. :Payload is the carrying capacity of an aircraft or launch vehicle,
  9. 9. :a subatomic particle of about the same mass as a proton but without an electric charge,
  10. 11. wind:the continuous flow of charged particles from the sun which permeates the solar system.
  11. 12. strength and vitality required for sustained physical or mental activity.
  12. 13. series of events that are regularly repeated in the same order.
  13. 17. stable subatomic particle with a charge of negative electricity
  14. 18. emission of energy as electromagnetic waves or as moving subatomic particles.
  15. 19. hydride:DescriptionThe helium hydride ion or hydroxide helium ion or helium is a cation with the chemical formula HeH⁺.