Week 24

Week 24 was a week that opened many doors for us in Chemistry. We began with a few new terms. First: polarized, which means that there's an uneven distribution of charge. Also we learned charge induction, which is when the arrangement of charged particles change to fit the charged object. Lastly we learned that a dipole is when there are 2 distinct regions of charge. Then we were introduced to the ion. An ion is a charged atom, which is caused by an electron transfer between atoms. Elements are neutral in their pure form until they become charged. If an ion has an electron deficit than it is positive, and if it has an electron surplus than it's negative. So, if an atom loses one electron through transfer, then it becomes a positive ion. If an atom gains 4 electrons in transfer, than it becomes a 4- ion. To form an ionic bond, a metal has to bond with a nonmetal. Also, the charge has to end up neutral when an ionic bond is formed. This means that the charges of one of the atoms cancels out the other. When naming an ionic compound, the metal (positive ion) comes first and then the nonmetal (negative ion) comes second. Also, the ending of the negative ion is replaced with "-ide". You can refer to the positive ion with "cation", and negative ion using "anion". Ionic charges are easy to remember using the periodic table and are shown in the photo. Knowing what we now know about ions and their pairing, we will be able to explore many new concepts of chemistry.