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40 Cards in this Set

  • Front
  • Back
All atoms wish to have a ..... ..... .....
full outer shell.
Ionic bonding involves the ...... of electrons from 1 atom to another.
transfer
Non-metals in Groups VI & VII gain ..... electrons.
negative.
Metals in Groups I & II lose .... electrons. Overall ..... charge.
negative
positively
An ion is a ...... atom.
charged
Bonding between non-metals are called?
Covalent bonding
What groups form ionic compounds?
Groups I, II, VI and VII.
A covalent bond is a ....... pair of .......
shared
electrons.
What are anions?
Negative ions.
When ionic compounds form they produce .... ....
giant lattices.
Charged ions within the giant lattice are ..... .....
very strong.
The number of .....surrounding each chloride ion is called its....
ions
coordination number.
The .... the charges on the ions, the ..... the attraction.
bigger
stronger
Ionic compounds have .... ..... ..... points.
very high melting
In many cases ionic compounds are ..... in water.
soluble
Water is a ..... .....
polar molecule.
Which group do not generally form bonds?
Group O, noble gases which are very stable. Except Xenon.
Most molecular substances are .... or .... at room temperature.
gases
liquids
Molecular substances .... .... ....
don't conduct electricity
(because there are no ions).
The melting and boiling points of covalent bonds are?
Very low.
Giant covalent structures contain.....
no charged ions.
Giant covalent structures are usually ..... in water.
insoluble
Name 2 examples of giant covalent structures.
Diamond
graphite
(made only from carbon atoms).
Elements that most readily form ions are those in Groups
I, II, VI and VII.
Groups I & II are ..... and they .... electrons to form ..... or .....
metals
lose
+ve ions
cations.
Groups VI & VII are ....-.... They ..... electrons to form ..... or .....
non-metals
gain
-ve ions
anions.
IONIC SUBSTANCES - CATIONS
Group I Group II
Li+ Be2+
Na+ Mg2+
K+ Ca2+
IONIC SUBSTANCES - ANIONS
Group VI Group VII
O2- F-
Ci-
Only elements at ...... sides of the ...... table will form ...... bonds.
opposite
periodic
ionic
An exmple of a small covalent molecule.
Hydrocarbons.
What is a hydrocarbon?
Molecules containing carbon and hydrogen atoms.
A molecules get larger their ...... increases.
boiling point
What does EPRT stand for?
Electron Pair Repulsion Theory. Pairs of electrons repel each other.
Explain the term ionic bond.
Attraction between opposite ions formed by electron transfer.
Why do ionic substances conduct electricity when molten?
The contain mobile ions.
Why are metals malleable?
When metal lattice deforms, electrons flow into new 'spaces' to maintain bonding.
What kind of inter-molecular forces are present in oxygen?
van der Waal's.
Which bond exists between + and - regions of polar molecules?
Permanent dipole-dipole attractions.
Which bond exist between the lone pair of a N, O or F atom?
Hydrogen bonds.
Which is the strongest intermolcular force?
Hydrogen bonds - H-bonds.