Bonds
An ionic bond when one electron is
completely transfered from one atom
to the other. When an ionic bond
happens, on atom becomes positvely
charged whilst the other is negatively charged. Unlike a covalent bond,
an ionic bond is a bond between a
non-metal atom and a metal atom.
Ionic compounds are solids. They are hard, brittle, and fragile.
Since ions have a positive and negative charge, they are extremely
attracted to each other, that’s why there are solids. Also opposite
to covalent bonds, ionic bonds are soluable in water, can conduct
electricity and have a very high melting point. They have a higher
melting point because it takes a lot of energy to break apart the
strong attraction between the ions.
Unlike an ionic bond, a covalent bond is when two atoms
share an electron. It bonds
a non-metal atom with a
non-metal atom. However,
the atoms not really sharing,
they’re fighting.
Unlike ionic compounds, covalent compounds can be both
solids, liquids, and gas. That is because a covalent bond
is not as strong as an ionic bond so it is able to exist as a
liquid and gas. Another difference between covalent and
ionic compounds is that covalent compounds have low
melting points, can not conduct electricty, and will not
dissolve in water. Covalent bonds only hav a low melting
point because the bond between covalent compounds is
not as strong, therefore it will only take a bit of energy to
melt them.
LiCl is an ionic bond, which means that
lithium gives an electron to chlorine
therefore it will become a positive ion.
NaCl is also an ionic bond.
O2 is a covalent bond which
means the two oxygen atoms are
sharing two electrons.
Finally, unlike both a covalent and ionic bond, a
metallic bond is when a metal atom bonds with
a metal atom. The atoms are arranged and vibrate
slightly. The outer most electrons roam freely and are
not connected to the atom itself. Therefore the atoms
turn into positive ions. Since opposites attract, the
electrons are bonded to the positive ions and thus
creates metallic bonding.
CO2 is also a covalent
bond.
Just like ionic compounds, metallic
compounds are able to conduct heat
and electricity and they have high
melting points. However, metallic compounds ey are very ductile
because electrons are spread across
the whole molecule. Therefore, the
metal is able to bend.
Li3B and MgLi2 are metallic
compounds.
Resources:
Metallic Bonding. Digital image. N.p., n.d. Web. 2 Sept. 2014.
Law, Jacqueline. Basics about Ionic Compounds. Digital image. N.p., Mar. 2007. Web. 2 Sept. 2014.
Carpi, Anthony. “Chemical Bonding.” Vision Learning. Visionlearning, Inc, n.d. Web.
“Covalent Bonding.” WGBH. WGBH Educationall Foundation, 2008. Web.
Carpi, Anthony. “Visionlearning.com.” Visionlearning. National Science Foundation and the U.S Department of Education, n.d. Web. 01 Sept. 2014. <http://
www.visionlearning.com/en/library/Chemistry/1/Chemical-Bonding/55>.
Helmenstine, Anne Marie. “What Are the Properties and Characteristics of Ionic Compounds?” About. About Education, n.d. Web. 01 Sept. 2014. <http://
chemistry.about.com/od/moleculescompounds/a/Ionic-Compound-Properties.htm>.
“Comparison of Properties of Ionic and Covalent Compounds.” Chemical Bonds. N.p., n.d. Web. 02 Sept. 2014.
“Metallic Bonding.” ,Metallic Bond Examples,Properties of Metallic Bonds. N.p., n.d. Web. 02 Sept. 2014.
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Images:
http://an-san.deviantart.com/art/Chemistry-Ionic-Bonds-173784591
http://www.snorgtees.com/t-shirts/geek-nerd/the-name-s-bond-ionic-bond
http://hinkhousescience.weebly.com/big-idea-2.html
http://blog.cleveland.com/metro/2008/09/high_demand_forces_ohio_to_imp.html
http://www.saltlakemetals.com/Silver_Chloride.htm
http://chemical-interactions.wikispaces.com/Covalent+Bonds
http://www.gcsescience.com/a26-covalent-bond-oxygen-gas-molecule.htm
http://imgarcade.com/1/metallic-bonding-cartoon/
http://beta.diylol.com/memes/2031-chemistry-cat/posts/236869-a-covalent-bond-yells-at-an-ionic-bond-didn-t-anybody-ever-teach-you-to-share
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/atomic/differentsubrev5.shtml