CHEM 120Week 1 Labster - Atomic Structure - Part II

Week 1 Labster - Atomic Structure - Part II OL Lab 2: Atomic Structure: Assess the possibility of life on other planets Learning Objectives • Explain the concept of an atom • Explain the properties of the basic subatomic particles: protons, neutrons, and electrons • Define the atomic number and atomic mass • Define isotopes • Identify the basics of the quantum atomic model and describe the significance of the four quantum numbers Atoms and the subatomic particles Everything you see around you is made up of atoms, and all atoms consist of subatomic particles. In the Atomic Structure simulation, you will learn the names and properties of the basic subatomic particles and understand how changing the number of electrons may charge an atom either positively or negatively. Identify different elements from the periodic table As a part of your mission, you will be teleported to an exoplanet to explore on your own, collect samples and come up with observations regarding the presence of life on the planet. Back in the laboratory, you will investigate the properties of the elements you brought back from the exoplanet. The periodic table will be close by to advise and guide you. What is an isotope? In order to understand the main properties of an isotope in the Atomic Structure simulation, you will use the holo-table. With the holo-table, you will be able to see a magnified atom of Lithium, and you will get the chance to build different isotopes of the same element. The quantum model and quantum numbers At the end of the simulation, you will be introduced to the quantum mechanical model of an atom and the four quantum numbers that provide all the necessary information to describe the orbits of the electrons around the nucleus. Part 1: Complete Labster Lab Atomic Structure: Assess the possibility of life on other planets Complete all activities and answer all questions within the lab. Part 2: Report and Reflection Purpose: Describe in complete sentences and in your own words, the purpose of this experiment. The purpose of this experiment was to assess the possibility of life on other planets. It is also design to initiate students to the structure of an atom. Observations: Record three observations from the simulation. 1. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). 2. The outermost regions of the atom are called electron shells and contain the electrons 3. From Bohr model, electrons travel in defined circular orbits around the nucleus, and electrons can jump from one orbit to another by emitting or absorbing energy. Answer the questions below: 1. In your own words, explain the terms below: a. Ion: an ion is a charged atom b. Isotope: an atom that has the same proton and electron number, but different neutron number. 2. Describe the three subatomic particles that make up atoms. Be sure that you include their locations within the atoms.