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Created page with "==Key Stage 4== ===Meaning=== '''Simple covalent molecules''' are small molecules in which the atoms are held together by covalent bonds. ===About S..."
==Key Stage 4==
===Meaning===
'''Simple covalent molecules''' are small [[molecule]]s in which the [[atom]]s are held together by [[Covalent Bond|covalent bonds]].
===About Simple Covalent Molecules===
: '''Simple covalent molecules''' are simple in that they have only a small number of [[atom]]s.
: '''Simple covalent molecules''' can be [[element]]s or [[compound]]s.
: The [[Physical Property|physical properties]] of [[substance]]s made of '''simple covalent molecules''' such as [[Boiling Point|boiling point]] and [[Melting Point|melting point]] are determined by the [[Intermolecular Bond|intermolecular bonds]].
: [[Substance]]s made of '''simple covalent molecules''' are usually poor [[Electrical Conductor|electrical conductors]] and poor [[Thermal Conductor|thermal conductors]].
: The [[Covalent Bond|covalent bonds]] in a '''simple covalent molecule''' can be represented with a [[Dot and Cross Diagram]].
===Examples===
{| class="wikitable"
|+ Simple Covalent Molecular Elements
|-
|[[File:HydrogenDotandCrossDiagram.png|center|200px]]
|[[File:OxygenDotandCrossDiagram.png|center|200px]]
|[[File:NitrogenDotandCrossDiagram.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |The two [[Hydrogen]] [[atom]]s each share one [[electron]] with each other.
| style="height:20px; width:200px; text-align:center;" |The two [[Oxygen]] [[atom]]s each share two of their [[electron]]s with one another.
| style="height:20px; width:200px; text-align:center;" |The two [[Nitrogen]] [[atom]]s each share three of their [[electron]]s with one another.
|}
{| class="wikitable"
|+ Covalent Bonds
|-
|[[File:CarbonDioxideDotandCrossDiagram.png|center|200px]]
|[[File:WaterDotandCrossDiagram.png|center|150px]]
|[[File:MethaneDotandCrossDiagram.png|center|250px]]
|-
| style="height:20px; width:175px; text-align:center;" |Each [[Oxygen]] shares two of its [[electron]]s with the [[Carbon]] [[atom]] while the [[Carbon]] [[atom]] shares two [[electron]]s with each [[Oxygen]] [[atom]].
| style="height:20px; width:175px; text-align:center;" |Each [[Hydrogen]] [[atom]] shares its only [[electron]] with the [[Oxygen]] [[atom]] and the [[Oxygen]] shares one of its [[electron]]s with each [[Hydrogen]] [[atom]].
| style="height:20px; width:250px; text-align:center;" |Each [[Hydrogen]] [[atom]] shares its only [[electron]] with the [[Carbon]] [[atom]] and the [[Carbon]] [[atom]] each of its 4 [[electron]]s with the [[Hydrogen]] [[atom]]s.
|}
===Meaning===
'''Simple covalent molecules''' are small [[molecule]]s in which the [[atom]]s are held together by [[Covalent Bond|covalent bonds]].
===About Simple Covalent Molecules===
: '''Simple covalent molecules''' are simple in that they have only a small number of [[atom]]s.
: '''Simple covalent molecules''' can be [[element]]s or [[compound]]s.
: The [[Physical Property|physical properties]] of [[substance]]s made of '''simple covalent molecules''' such as [[Boiling Point|boiling point]] and [[Melting Point|melting point]] are determined by the [[Intermolecular Bond|intermolecular bonds]].
: [[Substance]]s made of '''simple covalent molecules''' are usually poor [[Electrical Conductor|electrical conductors]] and poor [[Thermal Conductor|thermal conductors]].
: The [[Covalent Bond|covalent bonds]] in a '''simple covalent molecule''' can be represented with a [[Dot and Cross Diagram]].
===Examples===
{| class="wikitable"
|+ Simple Covalent Molecular Elements
|-
|[[File:HydrogenDotandCrossDiagram.png|center|200px]]
|[[File:OxygenDotandCrossDiagram.png|center|200px]]
|[[File:NitrogenDotandCrossDiagram.png|center|200px]]
|-
| style="height:20px; width:200px; text-align:center;" |The two [[Hydrogen]] [[atom]]s each share one [[electron]] with each other.
| style="height:20px; width:200px; text-align:center;" |The two [[Oxygen]] [[atom]]s each share two of their [[electron]]s with one another.
| style="height:20px; width:200px; text-align:center;" |The two [[Nitrogen]] [[atom]]s each share three of their [[electron]]s with one another.
|}
{| class="wikitable"
|+ Covalent Bonds
|-
|[[File:CarbonDioxideDotandCrossDiagram.png|center|200px]]
|[[File:WaterDotandCrossDiagram.png|center|150px]]
|[[File:MethaneDotandCrossDiagram.png|center|250px]]
|-
| style="height:20px; width:175px; text-align:center;" |Each [[Oxygen]] shares two of its [[electron]]s with the [[Carbon]] [[atom]] while the [[Carbon]] [[atom]] shares two [[electron]]s with each [[Oxygen]] [[atom]].
| style="height:20px; width:175px; text-align:center;" |Each [[Hydrogen]] [[atom]] shares its only [[electron]] with the [[Oxygen]] [[atom]] and the [[Oxygen]] shares one of its [[electron]]s with each [[Hydrogen]] [[atom]].
| style="height:20px; width:250px; text-align:center;" |Each [[Hydrogen]] [[atom]] shares its only [[electron]] with the [[Carbon]] [[atom]] and the [[Carbon]] [[atom]] each of its 4 [[electron]]s with the [[Hydrogen]] [[atom]]s.
|}