Periodic Table

• What does the Periodic Table show?

  All the elements in the universe
• Why is the Periodic Table considered an important tool for chemists?

  It helps understand trends in properties and make predictions
• Who first presented the modern Periodic Table and in what year?

  Dmitri Mendeleev in 1869
• What are the learning objectives related to the Periodic Table?

  • Arrangement of elements by atomic number
  • Understanding groups and periods
  • Deducing electronic configurations of the first 20 elements
  • Classifying elements as metals or non-metals
  • Relating electronic configuration to position in the table
  • Understanding similar chemical properties in the same group
  • Explaining why noble gases do not readily react
• How are elements arranged in the Periodic Table?

  In order of atomic number
• What are the vertical columns in the Periodic Table called?

  Groups
• What are the horizontal rows in the Periodic Table called?

  Periods
• What is the atomic number?

  The number of protons in the nuclei of the atoms
• What is the significance of the arrangement of elements in the Periodic Table?

  It allows us to understand trends in properties
• How can you deduce the electronic configurations of the first 20 elements?

  From their positions in the Periodic Table
• How can electrical conductivity and acid-base character of oxides be used?

  To classify elements as metals or non-metals
• How can you identify an element as a metal or a non-metal?

  According to its position in the Periodic Table
• Why do elements in the same group of the Periodic Table have similar chemical properties?

  Because they have similar electronic configurations
• Why do noble gases (Group 0) not readily react?

  Because they have a full valence shell of electrons
• What are the main categories of elements in the Periodic Table?

  • Metals
  • Non-metals
  • Noble gases (Group 0)
• What are the two types of rows in the Periodic Table?

  Groups and periods
• What is the first element in the Periodic Table?

  Hydrogen (H)
• What is the last element in the first 20 elements of the Periodic Table?

  Calcium (Ca)
• What is the symbol for Sodium?

  Na
• What is the symbol for Iron?

  Fe
• What is the symbol for Gold?

  Au
• What is the symbol for Mercury?

  Hg
• What is the symbol for Lead?

  Pb
• What is the symbol for Carbon?

  C
• What is the symbol for Oxygen?

  O
• What is the symbol for Nitrogen?

  N
• What is the symbol for Helium?

  He
• What is the symbol for Neon?

  Ne
• What is the symbol for Argon?

  Ar
• What is the symbol for Chlorine?

  Cl
• What is the symbol for Sulfur?


  S
• What is the symbol for Phosphorus?


  P
• What is the symbol for Silicon?

  Si
• What is the symbol for Barium?

  Ba
• What is the symbol for Strontium?

  Sr
• What is the symbol for Calcium?

  Ca
• What is the symbol for Lithium?

  Li
• What is the symbol for Potassium?

  K
• What is the symbol for Rubidium?

  Rb
• What is the symbol for Cesium?

  Cs