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Chemistry unit 1

  1. What is the relative Charge of Proton?
    1+
  2. What is the relative charge of Electron?
    1-
  3. What is the relative charge of Neutron?
    0
  4. What is the relative mass of Electron?
    1/2000
  5. Define Isotopes.
    Atoms of same element with different numbers of neutrons.
  6. Define relative Isotopic mass.
    the mean mass of an atom of an isotope compared with 1-12th if the mass of an atom of C-12.
  7. Define relative atomic mass (Image Upload 2).
    The weighted mean mass of an atom of an element compared to 1-12th of the mass of an atom of C-12.
  8. Define the mole.
    amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the C-12 isotope.
  9. Image Upload 4
    Molar mass(M)
  10. define molecule.
    small group of atoms held together by covalent bond
  11. n= Image Upload 6
    24
  12. n=Image Upload 8
    24 000
  13. Define RTP.
    Room temperature and Pressure
  14. At RTP one mole of gas occupies how much space?
    24 Image Upload 10
  15. n= concentration x ?
    Volume
  16. n=  ?? x Image Upload 12
    • ?=1000
    • ??= Concentration
  17. What is the Formulae for Sulphuric Acid?
    Image Upload 14
  18. What is the Formulae for Hydrochloric acid?
    HCL
  19. What is the formulae for Nitric Acid?
    Image Upload 16
  20. define base.
    a species that is a proton acceptor.
  21. define acid.
    A species that's a proton donor
  22. define Alkali.
    Type of base that dissolves in water to form  hydroxide ions (OHImage Upload 18)
  23. Define Salt.
    a compound which is formed when the hydrogen ion from an acid has been replaced by a metal ion or another positive ion.
  24. acid + base =
    salt + water
  25. acid + alkali =
    salt + water
  26. acid + carbonate =
    Salt + water + Image Upload 20
  27. define cation.
    positively charged ion.
  28. define anion.
    negatively charge ion.
  29. define Anhydrous.
    A substance containing no water molecule
  30. define Hydrated.
    Crystalline compound containing water molecule.
  31. what is the oxidation state of each element in Image Upload 22?
    • N=-3
    • H=+1
  32. What's the oxidation state of nitrogen in: - Image Upload 24 and Image Upload 26?
    • N=+1
    • N=+5
  33. define redox reaction.
    a reaction which both reduction and oxidation take place.
  34. define reduction.
    gain of electrons
  35. define oxidation.
    loss of electrons
  36. metal + acid =
    Salt + Image Upload 28
Author
Sylver
ID
213840
Card Set
Chemistry unit 1
Description
Chemistry for dummies
Updated

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