Chemical Bonding

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  • Created by: J.E.C.
  • Created on: 12-04-14 17:32
Atoms of metal elements in groups 1 or 2 can ___ electrons to form positively charged ions called ___?
lose, cations
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Most non-metal atoms have more than three outer electrons so try and ___ electrons, forming...?
gain, anions
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In ionic bonding, electrons are transferred from the ___ atoms to the ___ atoms?
metal > non-metal
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The cations and anions formed in Ionic bonding are held together by an ___ ___ because of ...?
electrostatic bond, their opposite charges
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What is an ionic bond?
Attraction between oppositely charged ions.
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In covalent bonding, the electrons are ___ and the resulting compound is more ___ than the individual elements?
shared, stable
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Give the 3 types of covalently bonded structures?
macromolecular, simple molecular & covalent network
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Describe the bonding between the C and the O in Carbon monoxide?
Two covalent bonds & one dative covalent with two electrons both coming from the oxygen atom.
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When the two atoms bonded together are of different sizes, explain which would be closer to the shared electrons and the effect of this?
The smaller atom will be closer to the shared electrons and exert a stronger pull on them.
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When metals on the left-hand side of the periodic table combine with non-metals on the right, what is formed?
Ionic compound
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When non-metals on the right-hand side of the periodic table combine with each other...?
covalent compounds are formed
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What is meant by electronegativity?
Measure of the ability of an atom in a molecule to attract electrons in a chemical bond to itself.
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Elements tend to be more electronegative at the ___ of a group and at the ___ side of the periodic table?
top, right-hand
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The bigger the difference in electronegativity between the atoms, the more ___ the bond and the greater the ___ character?
polar, ionic
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Explain how metallic bonding occurs?
Metal atoms lose their outer electrons to form a lattice of regularly spaced positive ions. The outer electrons of each of the atoms do not belong to any particular atom so create a delocalised pool around the ions. Ions attracted to electrons.
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What is a metallic bond?
The attraction between the positively charged ion and the negatively charged electron.
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Strength of metallic bonding depends on the number of...?
Electrons per atom available for delocalisation.
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Metals are ___ in water, do conduct electricity when solid or liquid and tend to have high...?
insoluble, melting points
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What is a complex ion and how are the atoms held together?
Ions that contain more than one type of atoms. Atoms held together by covalent bonds.
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Other cards in this set

Card 2

Front

Most non-metal atoms have more than three outer electrons so try and ___ electrons, forming...?

Back

gain, anions

Card 3

Front

In ionic bonding, electrons are transferred from the ___ atoms to the ___ atoms?

Back

Preview of the front of card 3

Card 4

Front

The cations and anions formed in Ionic bonding are held together by an ___ ___ because of ...?

Back

Preview of the front of card 4

Card 5

Front

What is an ionic bond?

Back

Preview of the front of card 5
View more cards

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