Science Yr 9 Chemistry

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Across
  1. 1. number of electrons on the outer most shell
  2. 6. a type of atom
  3. 8. 2 or more atoms together
  4. 10. Solid metals in a lattice formation
  5. 16. a table that records all elements known to man.
  6. 18. the area in between the metals and non-metals on the periodic table
  7. 19. compounds made of a metal and non-metal elements
  8. 20. Negetively charged subatomic equel to that of a proton
  9. 25. left side of the periodic table
  10. 27. # of protons + # of eletrons
  11. 29. ring of electrons around the atomic nucleaus
  12. 31. Substance after a reaction that is the compound of the two reactants
  13. 32. charged particles/atoms
  14. 33. something composed of two or more different elements
Down
  1. 2. Energy is absorbed and the reaction mixture becomes colder.
  2. 3. right side of the periodic table
  3. 4. positively charged subatomic equel to that of an electron
  4. 5. power needed in a reaction
  5. 7. substances that are apart of a reaction
  6. 9. A state of matter that is usually invisible to the naked eye
  7. 11. made when two or more nonmetal atoms bond by sharing valence electrons
  8. 12. Energy is released and the reaction mixture becomes hotter.
  9. 13. a molecule or ion capable of donating a hydron
  10. 14. A state of matter that is Compressible and has a set shape
  11. 15. needed in any reaction
  12. 17. # of protons
  13. 21. A state of matter that is incompressible
  14. 22. gaseous elements such as helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og
  15. 23. Written expression to show the amount of atoms/elements/compunds are needed to make something
  16. 24. substance that undergoes change during a reaction
  17. 26. Materials of the same atom that have different numbers of atoms and form different structures
  18. 28. a compound or substance found on the periodic table. Not commonly solid
  19. 30. Building blocks of all life from chemicals to proteins in our body
  20. 31. used to state the acidity of an acid