Search over 10,000 free study notes

Nitrogen makes 3 covalent bonds. It is in the second period of the periodic table and so has its outer electron in the second shell/energy level. This shell requires eight electrons in order to be filled....

We see two numbers given for the description of an atom on the periodic, one larger than the other. The larger number is in reference to the atomic mass of the atom, which is the sum of the number of prot...

They are the plural form of 'You', which would be 'You all' in English, so both of them have the same meaning.In Spain two forms are used because sometimes we want to show a certain degree of respect or p...

KeypointsEach diamond carbon is covalently bonded to 4 other carbonsEach graphite carbon is covalently bonded to 3 other carbonsDiamond is very hard due to its tertrahedral structureGraphite is made up of...

The primary role of the mitochondria is to produce the energy currency of the cell, ATP, through respiration, and to regulate cellular metabolism. The processes involved in ATP production are collectively...