Covalent Bonding

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What it a covalent bond?
A covalent bond is a strong bond between two non-metal atoms.
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What does a covalent bond consist of?
A covalent bond consist of a shared pair of electrons.
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What can covalent bonds be represented by?
Covalent bonds can be represented by a straight line or dot and cross diagram.
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How many bond can Hydrogen and Chlorine form?
Hydrogen and chlorine can both form one covalent bond.
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How many bonds can Carbon form?
Carbon can form four covalent bonds.
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How many bonds can Nitrogen form?
Nitrogen can form three covalent bonds.
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How many bonds can Oxygen form?
Oxygen can form two covalent bonds.
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What is a molecule?
A molecule is a collection of two or more atoms held together by chemical bonds.The molecule is the smallest part of a substance that displays the properties of the substance.
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What can covalent bonding form?
Covalent bonding can form certain properties in the molecules.
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What happens to an atom that shares one or more of it's electrons?
The atom will complete its highest occupied energy level.
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Where are the electrons involved in covalent bonding in the atom?
The electrons involved are in the highest occupied energy levels or outer shells of the atom.
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Are covalent bonds strong or weak?
Covalent bonds are strong and it takes a lot of energy to break them.
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What are the properties of molecules with covalent bonds?
Molecules with covalent bonds have low melting points and low boiling points like hydrogen and water.
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What does it mean when the atoms are 'stable.'
Atoms are stable when their outer shell contains it's maximum number of electrons.
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What is the rule for how many covalent bonds the element will form?
The rule for how many covalent bonds the element will form is equal to eight minus the group number the element is in.(i.e 8 - carbon(carbon is in group 4) so 8 - 4 = 4 so carbon will form 4 covalent bonds.)
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Can an atom form more then one covalent bond?
Yes,atoms can form multiple covalent bonds,they can share more then one pair of electrons and atoms of different elements will form either one,two,three or four covalent bonds with other atoms.
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Do the Nobel Gases form any covalent bonds?
No,the Nobel Gases in group 0 form no covalent bonds.
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In straight line models what does the straight line represent?
The straight line in straight line models represents a shared pair of electrons.
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What is a double covalent bond and how is it represented?
A double covalent bond means the atom has two shared pairs of electrons.This is shown by two lines between the elements.(i.e a molecule of oxygen is two oxygen atoms held together by a double bond like this 0=0.)
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What is a triple covalent bond and how is it represented?
A triple covalent bond means the atom has three shared pairs of electrons and is represented by three lines between the elements.
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What does the dot and the cross in dot and cross diagrams represent?
The dot in the diagram represents the shared electron from one atom and the cross represents the shared electron from the other atom.
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What is a compound?
A substance formed by chemical union (bonding) of two or more elements.
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How many electrons are involved in a covalent bond?
Two electrons are involved in a covalent bond.
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Card 2

Front

What does a covalent bond consist of?

Back

A covalent bond consist of a shared pair of electrons.

Card 3

Front

What can covalent bonds be represented by?

Back

Preview of the front of card 3

Card 4

Front

How many bond can Hydrogen and Chlorine form?

Back

Preview of the front of card 4

Card 5

Front

How many bonds can Carbon form?

Back

Preview of the front of card 5
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