4.1 Elements and Symbols

4.1 Elements and Symbols

  • All the substances in our world are made up of 88 elements.
  • Elements can't be broken down into simpler substances.
    • The elements have been named for planets, mythological figures, colors, minerals, geographic locations, and famous people over the centuries.
  • A complete list of elements and their symbols can be found on the inside front cover of the text.
  • The first letter of an element's symbol is capitalized.
  • We know when a different element is indicated with Silicon.
  • The symbols of two elements are disliked by Neon.
    • The element Co has a symbol.
    • There are two elements in the capital letters CO, carbon and oxygen.
  • The ancient Latin or Greek words that the symbols are derived from are given in parentheses.
  • Most of the symbols use letters from the current names, but some are derived from ancient names.
    • Learning their names and symbols will help you learn chemistry.
  • Write the chemical symbols for the elements.
  • Practice Problems 4.1 to 4.6 Mercury (Hg) is a silvery, shiny element that is a liquid in a room.
    • Mercury can enter the body through inhaled mercury vapor, of mercury poisoning occurred contact with the skin, or ingestion of foods or water contaminated with in Minamata and Niigata, mercury.
    • In 1965, mercury disrupted cell func Japan.
    • Long-term exposure to mercury can damage the brain and kidneys, the ocean was polluted with cause mental retardation, and decrease physical development.
    • Mercury can be found in blood, urine, and hair samples.
  • Toxic mercury is converted into a major food in the diet in both freshwater and seawater.
  • We are exposed to mercury by consuming mercury-contaminated fish.
    • The Food and Drug Administration set ral damage when mercury levels in fish became a concern.
    • In the United States, the maximum level of mercury in every kilogram of sea between 1988 and 1997 is a silvery one.
  • When the use of mercury was banned, fish higher in the food chain, such as swordfish and shark, lost 75% of their mercury content.
  • The EPA advises against consuming certain batteries and compact fluorescent light bulbs more than once a week.