CHEMISTRY IN CONTEXT LAB 5: ATOMIC MODELING, PAGE 1 CYCLE 3 NAME Modeling the Atom: Candyland PRE-LAB DISCUSSION: The neutral atom is essentially a heavy nucleus or center consisting of protons (positively charged particles) and neutrons (neutral particles – neither positive nor negative) surrounding by a cloud of orbiting VERY light electrons (negatively charged particles.) In order for the atom to be neutral, there must be an equal number of protons and electrons. The Niels Bohr model of the atom is the one MOST often used and appears above. He suggested that the orbits occupied by the electrons were energy levels. In order to better visualize Bohr’s model, today we are going to use some common household items (candy, paper plates, and Styrofoam cups) to create a model for the atom! APPARATUS/MATERIALS: Spree candy Cinnamon candy Butterscotch candy Boston baked beans Bubble gum balls 1 paper plate 1 styrofoam cup CHEMISTRY IN CONTEXT LAB 5: ATOMIC MODELING, PAGE 2 CYCLE 3 NAME PROCEDURE: 1) Use your cup to collect three different types of candy (OR three different colors of the same candy). 2) Identify each of the different candies as one of the following categories: a) electrons b) protons c) neutrons 3) Arrange the candies on the plate to model an atom with an atomic number between 1 and 8. 4) Call your teacher over to show him or her your model. 5) Repeat Step #3 for two additional elements. DATA/OBSERVATIONS: Sketch a picture of EACH of the atoms that you chose to model with the symbol for the atom below it: CHEMISTRY IN CONTEXT LAB 5: ATOMIC MODELING, PAGE 3 CYCLE 3 NAME ANALYSIS: 1) If there are protons and neutrons in the nucleus and electrons in orbit around the nucleus, which atom must this be? Label all parts. 2) Atoms can have multiple orbitals/energy levels for the electrons. Take a look at the following atom. If there are protons and neutrons in the nucleus and electrons in orbit around the nucleus, which atom must this be?