BSCE1 CHEM 01 First 20 Elements PDF
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This document introduces the first 20 elements in chemistry, including their names, symbols, and atomic numbers. It also provides a basic introduction to chemistry, including definitions of elements, compounds, matter, and the different types of mixtures. The document is likely a study guide or notes for a chemistry class.
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BSCE1: CHEM 01 FIRST 20 ELEMENTS NAME SYMBOL ATOMIC NUMBER Hydrogen H 1 Helium...
BSCE1: CHEM 01 FIRST 20 ELEMENTS NAME SYMBOL ATOMIC NUMBER Hydrogen H 1 Helium He 2 Lithium Li 3 Beryllium Be 4 Boron B 5 Carbon C 6 Nitrogen N 7 Oxygen O 8 Fluorine F 9 Neon Ne 10 Sodium Na 11 Magnesium Mg 12 Aluminum Al 13 Silicon Si 14 Phosphorus P 15 Sulfur S 16 Chlorine Cl 17 Argon Ar 18 Potassium K 19 Calcium Ca 20 Introduction: CHEMISTRY Chemistry: The central science Two types of Pure substances: The study of matter - Elements - Compounds Inorganic elements - All elements except CARBON Elements Exception to this rule are: - Simplest form of matter - CO2 - CO Types of elements: - CO3^-2 1) Metals: IA-IIIA and all the Bs - CO^-1 2) Non-metals: VA-VIIA 3) Metalloids: IVA Matter 4) Inert Gases: Noble gases - Occupies space and has mass *Inert Gases does not need other elements to be Two types of matter: stable* - Pure substances - Mixtures Compounds - Made from two or more different 1.1 Pure substances elements that have been chemically - Made up of only one type of atom or joined molecule Types of compounds: Heterogeneous 1) Acid - Distinguishing phase - H + Radical negative = Acid The atoms acquire a Types of Heterogeneous mixtures: negative charge 1) Suspensions - H(+) + Non-metal = Acid 2) Coarse substances - Has “acid” in its name 2) Base - Metal + Hydroxide (OH) Relationship of chemistry to other science 3) Oxides 1. Biology - Non-metal + Oxygen = Non-metallic 2. Plant science Oxide 3. Environmental science - Metal + Oxygen = Metallic Oxide 4. Geology 4) Salt 5. Astronomy - Metal + Non-metal (…ide) 6. Physics 7. Nuclear Chemistry 1.2 Mixture 8. Medicine and allied health sciences - Combination of pure compounds 9. Biochemistry Two types of Mixtures: -C.L.M.M. - Homogenous - Heterogenous Homogenous - Uniform in phase Types of Homogenous mixtures 1) Solutions - Solute and solvent 2) Colloids *The solvent is always greater than the solute* Types of solutions 1) Solid system - Solid solvent - Solid in solid solution - Liquid in solid solution - Gas in solid solution 2) Liquid system – Liquid solvent - Solid in liquid solution - Liquid in liquid solution - Gas in liquid solution 3) Gaseous system – Gas solvent - Solid in gas solution - Liquid in gas solution - Gas in gas solution
