JoJo's Crossword

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Across
  1. 2. the smallest unit of ordinary matter that forms a chemical element.
  2. 3. element whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
  3. 5. ionized gas consisting of positive ions and free electrons in proportions resulting in more or less no overall electric charge, typically at low pressures or at very high temperatures.
  4. 7. period in the periodic table is a row of chemical elements.
  5. 9. 32°F
  6. 11. stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
  7. 12. degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.
  8. 13. of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties.
  9. 14. element or substance that is not a metal.
  10. 17. positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass.
  11. 19. element or compound is a phase transition from the liquid phase to vapor.
  12. 22. mass of an atom of a chemical element expressed in atomic mass units.
  13. 23. is a chemical process where a solid turns into a gas without going through a liquid stage.
  14. 24. an experiment or study that does not receive treatment by the researchers and is then used as a benchmark to measure how the other tested subjects do.
  15. 25. to several distinct physical concepts, such as the internal energy of a system.
Down
  1. 1. one of the three main states of matter, along with liquid and gas.
  2. 3. solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity.
  3. 4. liquefied by heat.
  4. 6. of matter is an intermediate phase between solid and gas.
  5. 8. stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
  6. 10. subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
  7. 11. a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.
  8. 15. system of electrons surrounding the nucleus of an atom.
  9. 16. number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus.
  10. 18. total number of protons and neutrons in a nucleus.
  11. 20. the process by which water vapor in the air is changed into liquid water.
  12. 21. substance or matter in a state in which it will expand freely to fill the whole of a container, having no fixed shape and no fixed volume