Periodic Table crossword

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  1. 5. number the smallest unit into which matter can be divided without the release of electrically charged particles
  2. 7. Configuration the arrangement of electrons in energy levels around an atomic nucleus
  3. 10. any substance composed of identical molecules consisting of atoms of two or more chemical elements
  4. 12. Radiation an electric and magnetic disturbance traveling through space at the speed of light
  5. 15. a component of an atomic nucleus with a mass defined as 1 and a charge of +1
  6. 17. the speed of light
  7. 18. energy the amount of energy required to remove an electron from an isolated atom or molecule
  8. 19. neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen
  9. 22. a very important unit use of measurement that chemists use
  10. 23. any of class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light
  11. 24. the number of waves that pass a certain point in a specified amount of time
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  1. 1. one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table
  2. 2. atom or group of atoms carrying a negative electric charge
  3. 3. smallest unit into which matter can be divided without the release of electrically charged particles
  4. 4. mass the quantity of matter contained in an atom of an element
  5. 6. of Mass in a chemical reaction mass is neither created nor destroyed
  6. 8. atom or group of atoms that bears a positive electric charge
  7. 9. number number of units in one mole of any substance (defined as its molecular weight in grams)
  8. 11. the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire
  9. 12. any substance that cannot be decomposed into simpler substances by ordinary chemical processes
  10. 13. a collection of particles called protons are positively charged, and neutrons, which are electrically neutral
  11. 14. Properties a characteristic of a substance that can be observed or measured without changing the identity of the substance
  12. 16. a mathematically described region around a nucleus in an atom or molecule that may contain zero, one, or two electrons
  13. 17. Properties a characteristic of a substance that may be observed when it participates in a chemical reaction
  14. 20. that lacks the characteristics of a metal
  15. 21. create a negative charge that balances the positive charge of the protons in the atomic nucleus.