Bonding

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What does ionic bonding involve?
Electrostatic attraction between oppositely charged ions in a lattice!
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What type of force are the opposite ions held together by?
Electrostatic attraction!
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What does a single covalent bond contain?
A shared paired of electrons!
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What is a covalent bond?
The electrostatic attraction between the nuclei of two atoms that share a pair of electrons.
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How many pairs of electrons do mulitple bonds contain?
Multiple pairs!
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How do we represent a covalent bond and a dative or coordinate bond when writing?
Coordinate bond uses an arrow and a covalent bond uses a line!
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What is a dative or coordinate bond?
Covalent bonds in which both electrons originate from the same atom.
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What does metallic bonding involve?
The attraction between delocalised electrons and positive ions arrange din a lattice!
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What is a metallic bond?
The electrostaic attraction between positively chargede metal ions and the surrounding sea of delocalised electrons.
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Name the four types of crystal structures.
Ionic (compounds), Metallic( metals), Macromolecular (non metals ,giant covalent) and molecular(molecules).
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State the block in the periodic table that contains nickel.
D-block ! ( dont say transition metals , you'll get no marks)
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Van der Waals forces exist between all molecules. Explain how these forces arise.
-Electron movement in the first molecule - induces a dipole in another molecule - attraction or s+ attracts s- in different adjacent molecules.
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methanol = 65 degrees, methanehtiol = 6 degrees. why in terms of intemolecular forces, these boiling points are different.
methanol = h-bonds. intermolecular forces weaker in methanethiol therefore small amount of energy needed to break bond. methanol has strronger intermolecular force.
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What are allotropes of an element?
Different structures but same state! e.g diamond an dgraphite are both forms of carbon but differnt states.
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What happens when diamond melts?
Covalent between the 4 carbon atoms are broken down and carbons are free to move. Huge amount of energy must be transferred by heating to break the strong covalent bonds in diamond. Therefore thats why its melting point is very high!
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Does diamond conduct electricity?
No theres no charged particles.
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Describ the structure of graphite
A giant covalent structure like diamond. Flat sheets carbon atoms covalently bonded in hexagonal rings. 4th carbon electron makes up a part of a cloud of delocalised electrons between the layers. Delocalised electrons hold structure by Van der Waals
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Other cards in this set

Card 2

Front

What type of force are the opposite ions held together by?

Back

Electrostatic attraction!

Card 3

Front

What does a single covalent bond contain?

Back

Preview of the front of card 3

Card 4

Front

What is a covalent bond?

Back

Preview of the front of card 4

Card 5

Front

How many pairs of electrons do mulitple bonds contain?

Back

Preview of the front of card 5
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