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simple molecules vs. giant structures (giant covalent (61bpiIUjZpL._SX466_…
simple molecules vs. giant structures
ionic
table salt (sodium chloride)
an ionic bond is between a metal and a non-metal, it's the transfer of valence electrons.
properties: form crystals, they are hard and brittle, they have high melting and boiling points
covalent
water (H20)
properties: low melting and boiling points, low conductivity,
a covalent bond is when there is a sharing of an electron pair between two atoms (unlike ionic, they don't completely give up electrons, only share)
giant covalent
silicon dioxide
diamond
graphite
properties: solids at room temperature, very high melting and boiling points, meaning a large amount of energy is needed to break there covalent bond.
they contain more atoms than a simple covalent bond, they are usually arranged into giant lattices, and are extremely strong
simple covalent
carbon dioxide (CO2)
properties: low melting and boiling points, because they are held together with weak intermolecular forces, they don't conduct any electricity.
they contain only a few atoms
metallic
metals form positive ions creating metallic bonds
https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Book%3A_Introductory_Chemistry_(CK-12)/08%3A_Ionic_and_Metallic_Bonding/8.09%3A_Physical_Properties_of_Ionic_Compounds
https://www.britannica.com/science/covalent-bond
www.gcsescience.com › a41-metal-bonding-delocalized
https://www.sciencedaily.com/terms/metal.htm
https://www.bbc.co.uk/bitesize/guides/zxxn82p/revision/3
https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Chemical_Bonding/Valence_Bond_Theory/Delocalization_of_Electrons
https://www.amazon.com/Parco-Scientific-Silicon-Dioxide-Molecular/dp/B07FXQ38X7
https://www.verdict.co.uk/water-harvester/
https://www.alibaba.com/product-detail/Common-Salt-Sodium-Chloride-NaCl-_50031848173.html
https://courses.lumenlearning.com/boundless-chemistry/chapter/the-covalent-bond/
https://www.bbc.co.uk/bitesize/guides/zgq8b82/revision/1
http://sciencesolve.blogspot.com/2015/09/diamond-structure.html
https://www.youtube.com/watch?v=Qd2_LeCW7wo
delocalised
a delocalised electron is one that is not connected to a particular ion.
delocalised atoms stable the forces, as they spread energy over a larger area
intermolecular force
interaction between molecules its the sum of all the forces between two neighboring molecules
