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C1 AQA (9-1) GCSE Revision

Oliver Faragher Chemistry GCSE GCSE English 5.0Average rating 5.0 out of 5 (4 ratings) 45 cards

C1 AQA (9-1) GCSE Revision

Cards in this deck (45)

  1. 1What is an element?A substance that cannot be broken down chemically
  2. 2How many elements are there?115 (Textbook says around 100)
  3. 3What is an exothermic and an endothermic reaction?Exothermic = A reaction that gives off heat
    Endothermic = A reaction that takes in heat
  4. 4What does "ide" represent when at the end of a compound name? e.g Sodium ChlorIDEThe two elements (sodium and chlorine) are joined together with no other elements involved
  5. 5What does "ate" represent when at the end of a compound name? e.g Potassium NitrateThe compound has the two elements (potassium and nitrogen) joined together along with the third element of oxygen
  6. 6What happens when two or more atoms join?They form a molecule
  7. 7Balance the following equation Mg + O2 = MgO2Mg + O2 = 2MgO2
    (Add a two in front of the magnesium and product)
  8. 8Why do we balance equations?To guarantee that it follows the law of conservation of mass
  9. 9What are mixtures?Solutions containing two or more chemicals not chemically joined
  10. 10What methods can we use to separate mixtures?Filtration, Crystallization, Simple distillation, fractional distillation and chromotography
  11. 11What is fraction distillation used to separate?More than two liquids with different boiling points.
  12. 12How does fractional distillation work?The mixture is heated and then the various different components evaporate and then condense again on tubes that become gradually cooler the further up you go
  13. 13Fractional distillation diagramFractional distillation diagram
  14. 14What did the Greek philosopher theorize in 400BCHe described materials being made of small particles called atoms which could not be divided
  15. 15What did John Dalton suggest?He said that atoms were spherical shapes, like billiard balls, that could not be divided
  16. 16What did J.J Thompson discover?He discovered the existence of electrons and proposed that negative electrons were embedded in a positively charged pudding shaped atom
  17. 17What did Ernest Rutherford's team discover?Through the gold leaf experiments, where they sent a beam of alpha particles through a gold leaf, they discovered that the atom had a positively charged nucleus and they created the nuclear model
  18. 18What did Niels Bohr discover?Niels Bohr create the Bohr model (GCSE one) and stated that electrons were placed on energy levels at set distances
  19. 19What did James Chadwick discover?He discovered the existence of neutrons in the nucleus
  20. 20What are the relative atomic masses of protons, neutrons and electrons?Proton = 1
    Neutron = 1
    1
    Electron = ------ (0)
    1836
  21. 21What is the normal radius of atoms and how does this get bigger?The normal radius is 1nm
    It gets larger the further down the table you go (the more shells you get)
  22. 22Which number is always bigger in an element, the relative mass or the atomic number?Relative mass
  23. 23How do you calculate the number of protons OR electronsUse the atomic number
  24. 24How do you calculate the number of neutrons?Subtract the atomic number from the atomic mass
  25. 25What are the charges of protons and electrons?Proton = +1
    Electron = -1
  26. 26What is are isotopes?Atoms with different numbers of neutrons
  27. 27What is the formula for relative abundance?Ar = (mass of first isotope x % of isotope) x (mass of second isotope x % of isotope)
    All are divided by 100
  28. 28What do column numbers in the periodic table represent?Number of valence (outer shell) electrons
  29. 29What do the row numbers represent in the periodic table?Number of shells
  30. 30How many electrons can each shell hold (in order)2, 8 , 8 , 2
  31. 31What forms when you react group 1 and 7?A salt
  32. 32What is the proper word for group 8 being non-reactive?Inert
  33. 33What did Mendeleev do that previous table developers had not done?He arranged based on properties and he left gaps based on predictions for future elements
  34. 34What are the main properties of metals?Lustrous, hard, high density, high strength, high melting/boiling point, good heat conductors, good electrical conductors
  35. 35What are the main properties of non-metals?Dull, Soft/brittle, low density, low melting point/boiling point, poor-no thermal conduction, poor-no conductors of electricity
  36. 36What happens when you react a metal and non-metal?The metal will lose electrons (becoming a positive ion) and the non-metal will gain electrons (becoming a negative ion)
  37. 37What are outer electrons called?Valence Electrons
  38. 38What makes an atom stable?A full outer shell
  39. 39What happens if an atom has an unstable number of electrons (3/4/5)?It will share electrons with another element
    (any more than this and it gains electrons and any less and it loses)
  40. 40How do boiling points change as you go down group 8?They decrease
  41. 41What is the key property of any group 1 element?It is highly reactive with water
  42. 42What gas do group 1 metals give off when they react with water?Hydrogen
  43. 43What is an ion?An atom with and positive or negative charge (it has lost/gained electrons)
  44. 44What happens to reactivity as you go down group 7?It decreases
  45. 45—

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Description
GCSE Chemistry GCSE (Paper 1) Flashcards on C1 AQA (9-1) GCSE Revision, created by Oliver Faragher on 24/04/2018.
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Oliver Faragher
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