Elements

Elements

• 2.
  Elements  John Dalton-Enlish scientist-chemist, who proposed the Atomic Theory Of Matter.  Also believed that matter is composed of atoms.  He proposed the idea that there were different types of atoms which is called elements.  An element is a pure substance made up of only one type of atom.
• 3.
  Try This InquiryLab  Finding the Difference Between a Pure Substance and a Mixture.
• 4.
  Chemical symbol isa representation of an element using letters derived from the first letter of the element’s name, or of the first and second letter.
• 5.
  Elements with Single-Letter symbolsElementSymbol Oxygen O Hydrogen H Carbon C Nitrogen N Sulfur S Phosphorus P Fluorine F Iodine I Boron B Vanadium V Uranium U
• 6.
  Elements with symbolsusing Their First Two letters Calcium- Ca Argon- Ar Barium- Ba Beryllium- Be Bromine- Br Aluminum- Al Cobalt- Co Helium- He Lithium- Li Silicon-Si Neon-Ne Nickel-Ni Titanium- Ti Germanium-Ge Selenium- Se Xenon-Xe
• 7.
  Elements w/ symbolother than their first two letters Arsenic- As Cadium- Cd Chlorine Cl Chromium- Cr Magnesium- Mg Manganese-Mn Strontium- Sr Zinc-Zn Platinum-Pt Rubidium- Rb Radon-Rn
• 8.
  Elements with Symbolsbased on Foreign Names ELEMENT FOREIGN NAME SYMBOL Antimony Stibium Sb Copper Cuprum Cu Gold Aurum Au Iron Ferrum Fe Lead Plumbum Pb Mercury Hydragyrum Hg Potassium Kalium K Silver Argentum Ag Sodium Natrium Na Tin Stannum Sn Tungsten Wolfram W
• 9.
  Properties of Metalsand NonMetals METALS NONMETALS Good conductor of heat and electricity Insulators ( except graphite) Lustrous or exhibit shininess Do not exhibit luster Malleable and ductile Brittle and break easily
• 10.
  METALS NONMETALS High tensile strength Lowtensile strength High melting points Low melting points High density Low density
• 11.
   Metals alsohave diverse and unique properties.  Mercury is liquid at room temperature, Metals in Group 1A
• 12.
   Nonmetals arefew. Most nonmetals are gases such as nitrogen, oxygen, hydrogen, fluorine, chlorine, helium, neon, and more.  Only one nonmetal is liquid-bromine  Some are solid such as Carbon, Phosphorous, sulfur, selenium, and iodine.
• 13.
   Metalloids areelements that have properties which are intermediate between metals and nonmetals. They are solid but lack luster, and they are typically semiconductors, which means they both insulate and conduct heat and electricity.
• 14.
  The Metalloid Elements ElementSymbol Boron B Silicon Si Arsenic As Antimony Sb Tellurium Te Germanium Ge
• 15.
  Elements essential tothe Body Element Function Iron (Fe) Synthesis of hemoglobin Cobalt (Co) Red blood cell production Copper (Cu) Synthesis of melanin Phosphorus (P) Bone formation Selenum (Se) Metabolism of fats