Tutorial:Basic Chemistry Topics: Difference between revisions

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[[Image:Periodic Table (oxygen).png| thumb | center | 300px ]]

The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total mass of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the masses of ~~it's~~ protons, neutrons and electrons.

The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total mass of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the masses of its protons, neutrons and electrons.

The periodic table is a collaboration of atoms that are arranged according to their common features. Groups are the vertical columns of atoms, and the periods are the horizontal rows. When moving from left to right across the periods (horizontally), there is an increase in electronegativity. Electronegativity refers to the atoms ability to pull other electrons towards it, increasing it’s density and providing itself with a negative charge. The concept of electronegativity contributes to the polarity of an atom. Polarity is caused by a difference in electronegativity between atoms in a compound and/or the asymmetry of the compounds structure. A compound is nonpolar when the electronegativity of the atoms/functional groups are close or even, the compound is symmetrical and the electrons are not being pulled more in one direction.

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 [[Image:Periodic Table (oxygen).png| thumb | center | 300px ]]
-The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total mass of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the masses of it's protons, neutrons and electrons.
+The image above displays Oxygen (O) in its periodic box. The atomic number of oxygen is 8, centered above the single-letter abbreviation of Oxygen. “8” represents the number of protons in the atom’s nucleus. The atomic number is also used to arrange elements in the periodic table. Notice the increasing value of protons in the atoms from left to right. The atomic mass of an element is centered under the single-letter abbreviation of an atom and represents the total mass of the atom. In this case, oxygen has an atomic mass of ~16. The total weight of an atom is the sum of the masses of its protons, neutrons and electrons.
 The periodic table is a collaboration of atoms that are arranged according to their common features. Groups are the vertical columns of atoms, and the periods are the horizontal rows. When moving from left to right across the periods (horizontally), there is an increase in electronegativity.  Electronegativity refers to the atoms ability to pull other electrons towards it, increasing it’s density and providing itself with a negative charge. The concept of electronegativity contributes to the polarity of an atom. Polarity is caused by a difference in electronegativity between atoms in a compound and/or the asymmetry of the compounds structure. A compound is nonpolar when the electronegativity of the atoms/functional groups are close or even, the compound is symmetrical and the electrons are not being pulled more in one direction.