GCSE Chemistry C2

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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
    Image Upload
  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
    • Image Upload
  21. draw the ionic bonding forming sodium chloride
    Image Upload
  22. draw an ionic bond of magnesium oxide
    Image Upload
  23. draw an ionic bond of calcium chloride
    Image Upload= CaCl2

Card Set Information

Author:
ghoran
ID:
143193
Filename:
GCSE Chemistry C2
Updated:
2012-03-24 08:42:31
Tags:
unit two part one structure bonding ionic
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revision
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