GCSE Chemistry C2

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Author:
ghoran
ID:
143193
Filename:
GCSE Chemistry C2
Updated:
2012-03-24 04:42:31
Tags:
unit two part one structure bonding ionic
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revision
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  1. all substances are made up of :
    atoms
  2. a substance which contains only one type of atom is called an :
    element
  3. all the elements are shown on the :
    periodic table
  4. there are about .... different elements
    100
  5. substances made up of two or more different types of atoms that are chemically bonded together are called :
    compounds
  6. substances that are mixed together but not not chemically bonded are called :
    mixtures
  7. chemical reactions between atoms happen because :-
    in order to do this atoms will :-
    • b) chemical reactions between atoms happen because they want to gain a full outer shell of electrons and so have an electronic configuration the same as a noble gas (a group 0 element)
    • a) in order to do this the atoms will give , take or share electrons . Only electrons in the outer shell can do this (i.e. only electrons in the outer shell of an atom are involved in bonding)
  8. ionic bonds are formed when a ..... reacts with a ....-....
    • metal
    • non-metal
  9. covalents bonds are formed when .... ...-... ... or .....
    two non-metals join or react
  10. metallic bonds are formed between ... ..
    metal atoms
  11. intermolecular forces are
    weak forces that exist between small molecules like water , they !!!! only exist in simple covalent bonding !!!!
  12. during ionic bonding , when atoms form chemical bonds by ..... and ... electrons they form ..... particles called ....
    • gaining
    • loosing
    • charged
    • ions
  13. during ionic bonding , .... and .. ...-... atoms .... together by .... and .... .... , the metals .... electrons to ....-.. atoms so that both end up with electrons structures like those of the .... ...
    • metals
    • non-metals
    • react
    • gaining
    • loosing
    • electrons
    • give
    • non-metals
    • noble gasses
  14. during ionic bonding metal atoms always .... ... and become .... chraged ...... for exapmle Na becomes .....
    • lose
    • +
    • ions
    • Na+
  15. non-metal atoms always ... .... and become .... charged .... for example Cl becomes ...
    • gain
    • electrons
    • -
    • ions
    • Cl-
  16. the metals and non-metal ions formed are + and - charged and so are .... to each other . the ....... ... of .... between .... charged ions is very .... . this .... ... of .... is called an .... .....
    • attracted
    • electrostatic
    • force
    • attraction
    • oppositely
    • strong
    • strong
    • force
    • attraction
    • ionic bond
  17. metal and non-metals react to form ionic compound which are made of giant structures of the oppositely charged ions . these strong ..... .... act in ... directions . ionic compounds have .... melting and boiling points because you have to supply a lot of energy to break a .... of .... ... bonds so that the ions can be .... to move around in a .... or ... state
    • electrostatic forces
    • all
    • high
    • lot
    • strong ionic
    • free
    • liquid
    • gas
  18. draw a diagram to show part of a giant strucyture (lattice) of ions
  19. when they are in solid form ionic compounds ... .... electricity . when they are melted or dissolved in water , ionic compunds ... .... electricity . this is because when they are in a liquid form the .... are .... to move and .... the .... (but when they are in soldi form the ions cant move)
    • cant conduct
    • can conduct
    • ions
    • free
    • carry
    • curent
  20. draw a diagram to show an ionic reaction between magnesium and chlorine
    • magnesium electronic structure : 2,8,2 (needs to lose 2e- to become a magnesium ion Mg2+)
    • there are 2 chlorine atoms each atom has an electronic structure of : 2,8,7 (each atom needs to gain 1e- to become a chloride ion Cl-) the end product has a formula of MgCl2
  21. draw the ionic bonding forming sodium chloride
  22. draw an ionic bond of magnesium oxide
  23. draw an ionic bond of calcium chloride
    = CaCl2

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