Assign an R or S configuration to the chiral center in each molecule

Spencer Kociba CHEM 101 Lecture 1 Required Materials: ● Textbook (in syllabus) ● Lab manual ● Safety goggles ● Lab coat -Matter has to have mass and take up space -Energy=the ability to do work (move mass a distance) -Pure substance= only 1 element/compound in a sample Spencer Kociba CHEM 101 Lecture 2 Covering: 1.5 and 1.8 ● Law of conservation of matter: mass of reactants=mass of products after a reaction occurs ● Law of definite proportions: All samples in a compound have the same proportions of their constituent elements element A mass ○ To find ration:element B massB ● Subatomic particles ○ proton=positive (approx. 1amu) ○ neutrons=neutral/no charge (add mass but not charge) ○ electrons=negative (approximately .00055amu) ○ amu=atomic mass unit ○ Mass number=sum of protons and neutrons ○ Atomic #= the number of protons (how elements are defined) ■ ○ Isotopes: atoms with the same number of protons but different numbers of neutrons (different masses); certain isotopes of elements are more common than others ■ Natural abundance=relative amount of each isotope ■ The average of all of an atom’s isotopes is it’s atomic mass displayed in the periodic table (based on % natural abundance) A ○ ZX → X=chemical symbol. Can sometimes be denoted as X--A ● Ions ○ Definition: a cha