Chemistry is Awesome!!!

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Across
  1. 2. the strongest base has a pH of what?
  2. 3. protons + neutrons give what number to an atom?
  3. 6. what element is in period 4, group 2 of the periodic table?
  4. 7. atoms with the same atomic number but have different mass numbers are called what?
  5. 9. when an acid and base are added together it is called a what type of reaction?
  6. 11. how many electrons can fit in the first electron shell?
  7. 14. which subatomic particle has no charge at all?
  8. 18. on a pH scale 7 is neutral, when it is below 7, what is it called?
  9. 19. what small group sits between metals and non-metals on the periodic table?
  10. 20. when an acid and base react they generally produce water and a ?
  11. 21. combustion and oxidisation reactions involve which element?
  12. 23. what element has the atomic number 105?
  13. 24. the atomic number tells you how many protons are in an atom, this is also equal to the number of what?
Down
  1. 1. all matter is made up of?
  2. 4. electrons are found outside the nucleus in orbitals or?
  3. 5. the number of protons in an atom gives what number?
  4. 8. which subatomic particle is found in the nucleus of an atom with neutrons?
  5. 9. electrons have this kind of charge
  6. 10. a periodic table is organised in periods and?
  7. 12. helium and neon are non-reactive and are in what 'gas' group?
  8. 13. which element has the symbol H?
  9. 15. pure substances that cannot be broken down into any other substance are called?
  10. 16. what element has the symbol Ga?
  11. 17. in a chemical reaction you need reactants to form a what?
  12. 22. covalent and ionic are both forms of chemical what?