Problem 86AE
These exercises are not divided by category, although they are roughly in the order of the topics in the chapter. They are not paired.
Identify the element represented by each of the following symbols and give the number of protons and neutrons in each: (a) 74 33X, (b) 127 53 X, (c) 152 63 X, (d) 209 83 X.
9.6.2016 BIO 140 Cresawn The Chemistry of Life What areas of expertise in Biology and what areas of expertise in Chemistry are required to evaluate an oil spill and design a cleanup plan (Think about real world application) I. Cells a. Contain matter Large Carbon Molecules (e.g. proteins) Made up of many Small C molecules (e.g. amino acids) Each contain Carbon b. Contain energy Energy from ATP Requires movement of Electrons Made up of Chemical Bonds Form based on Electronegativity II. Definitions and Terms to Use In a Concept Map Later (Do Yourself) a. Mass b. Proton c. Neutron d. Electron- prefer a negative charge e. Charge- f. Electronegativity- Property of an atom that represents the attractive force the nucleus exerts on its electrons i. Electronegativity depends on the number of protons and distance of valence electrons from the nucleus. Atoms with significant difference in electronegativity will form polar bonds. g. Mass Number- the number of protons plus the number of neutrons h. Atomic Number- the number of protons i. Isotopes- Same element differentiated by the number of neutrons j. Shells- various energy levels of an atom k. Covalent bonds- bonds where valence electrons on the outer shells are shared to increase stability i. Ex:
