C2 Chemical Bonding

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  • Created by: KAustria
  • Created on: 09-05-14 21:16
What are the 2 ways atoms and elements join together?
Ionic Bonding- transferring of electrons to make ions Covalent Bonding - of electrons to make molecules
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What is ionic bonding?
The transferring of electrons between metallic and non-metallic elements. Metal atoms lose an atom to produce a positively charged ion. Non-metal gain electrons to become a negatively charged ion.
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What is covalent bonding?
The bonding of non-metallic elements through sharing electrons.
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lements in Group 1 of the periodic table have one electron on their outermost shell, what happens when they ionically bond?
They lose one electron and become + 1 ions
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elements in Group 7 of the periodic table have 7 electrons on their outermost shell, what happens if they ionically bond?
The gain one electron and become - 1 ions
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Describe how ionic compounds are held together
Strong electrostatic forces of attraction act in all directions. Each ion in the giant structure or lattice is surrounded by ions with the opposite charge and so is held firmly in place.
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What can you use to represent the atoms and ions involved in forming ionic bonds?
dot and cross diagrams.
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How do you work out the formulae of ionic compounds?
By balancing the charges of the two ions.
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How do you represent ions made up of more than one element in an ionic formula?
By placing brackets around them
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How are atoms arranged in a metal?
Atoms in a metallic element are all the same sixe. They form giant structures in which layers of atoms are arranged in regular patterns.
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What are the electrons on the ooutermost energy level in a metal atom like?
They are delocalised which means they are free to move between atoms.
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The delocalised elections create what kind of structure in a metallic element?
A lattice of positive ions in a 'sea' of moving delocalised electrons/
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How are metallic structures held together?
Th delocalised electrons strongly attract the positive ions (as they are negatively charged) and hold the giant structure together.
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What forces hod metal atoms in place in their giant structures?
Electrostatic forces between positive ions and negative ions.
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Other cards in this set

Card 2

Front

What is ionic bonding?

Back

The transferring of electrons between metallic and non-metallic elements. Metal atoms lose an atom to produce a positively charged ion. Non-metal gain electrons to become a negatively charged ion.

Card 3

Front

What is covalent bonding?

Back

Preview of the front of card 3

Card 4

Front

lements in Group 1 of the periodic table have one electron on their outermost shell, what happens when they ionically bond?

Back

Preview of the front of card 4

Card 5

Front

elements in Group 7 of the periodic table have 7 electrons on their outermost shell, what happens if they ionically bond?

Back

Preview of the front of card 5
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