University:
Eastern Kentucky University
Course:
CHE 111 | General Chemistry
Academic year:

2022
Views:

440

Pages:

4
Author:

Killian Mata

REPORT SHEET Atoms and Elements A. Physical Properties of Elements Element Aluminum 1. Symbol 1. Atomic Number Al 13 2. Color Lt. gray Black LAB 6 2. Luster 3. Metal/Metalloid/ Nonmetal Shiny M Carbon C 6 Dull NM Copper Cu 29 Orange Shiny M Iron Fe 26 Gray/black Shiny M Magnesium Mg 12 Lt. gray Shiny M Nickel Ni 28 Lt. gray Shiny M Nitrogen N 7 Colorless None NM Oxygen O 8 Colorless None NM Phosphorus P 15 Deep red Dull NM Silicon Si 14 Gray/black Shiny ML Silver Ag 47 Lt. gray Shiny Sulfur S 16 Yellow Dull M NM Tin Sn 50 Lt. gray Shiny M Zinc Zn 30 Gray Shiny M 1 2 3 12 Transition elements Mg 4 26 28 29 Fe Ni Cu 5 6 7 8 C N O 13 14 15 16 Al Si P S 47 50 Ag Sn Noble gases Alkaline earth Halogens Alkali B. The Periodic Table Questions and Problems Q1 From their positions on the periodic table, categorize each of the following elements as a metal (M), a metalloid (ML), or a nonmetal (NM): Na Fe M M S C NM NM Cu As M ML F Ca NM M Q2 Give the symbol of each of the following elements: a. noble gas in Period 2 c. alkali metal in Period 3 e. alkali metal in Period 4 Ne Na K b. halogen in Period 2 d. halogen in Period 3 f. metalloid in Period 2 F Cl B 3 Complete the following table for the elements that are listed. If you have a full display of elements, check to see if your predictions are correct. Element Metal/Metalloid/ Nonmetal Chromium Prediction: Shiny/Dull M Correct? Yes/No Shiny Yes Gold M Shiny Yes Lead M Shiny Yes Cadmium M Shiny Yes Silicon ML Shiny Yes C. The Atom Name of Element Iron Symbol of Element Fe Atomic Number 26 Mass Number 56 Neutrons Electrons 26 30 26 13 14 13 39 19 20 19 80 35 45 35 197 79 118 79 Al 13 27 Potassium K 19 Bromine Br 35 Gold Au 79 Aluminum Protons D. Isotopes and Atomic Mass 1. 2. Nuclear Symbol Protons Neutrons Electrons 107 47Ag 47 60 47 109 47Ag 47 62 47 Nuclear Symbol Isotopic Mass Percent Abundance 107 47Ag 106.9 51.84% 109 47Ag 108.9 48.15% (Show calculations here) Questions and Problems Q4 A neutral atom has a mass number of 80 and has 45 neutrons. Write its atomic symbol. Br Q5 An atom has two more protons and two more electrons than the atom in Question 4. What is its atomic symbol? Rb