Group 1

• What happens when lithium reacts with oxygen?

  Lithium forms lithium oxide
• How does the reactivity of sodium compare to lithium when reacting with oxygen?

  Sodium reacts more rapidly than lithium
• What should you be able to describe by the end of the video on group one metals?

  How group one metals react with oxygen, chlorine, and water
• What charge does a lithium ion have after reacting with oxygen?

  Positive one charge
• What is the name of group one in the periodic table?

  Alkali metals
• What ions are produced when lithium reacts with chlorine?

  A lithium ion and a chloride ion
• What are the main reactions of group one metals covered in the video?

  • React with oxygen
  • React with chlorine
  • React with water (to be covered in the next video)
• What compound is formed when potassium reacts with oxygen?

  Potassium oxide
• What happens to the outer electron of lithium when it reacts with oxygen?

  It moves to the oxygen atom
• How do you write the balanced equation for the reaction between lithium and oxygen?

  4Li + O$_2$ → 2Li$_2$O
• How can you write the equations for the reactions of sodium and potassium with oxygen?

  By changing the symbol for the metal in the lithium equation
• What are the general properties of group one metals?

  • Soft
  • React rapidly with oxygen
  • React rapidly with chlorine
  • Have one outer electron
• What is the significance of the outer electron in group one metals?

  It determines their reactivity
• How many electrons do all group one metals have in their outer energy level?

  One electron
• What charge does an oxide ion have after lithium reacts with oxygen?

  Negative two charge
• What is the reaction between lithium and chlorine?

  Lithium forms lithium chloride
• What is the formula for the compound formed when lithium reacts with chlorine?

  LiCl
• What is the significance of the outer electron in group one metals?

  It determines their reactivity
• What are the main reactions of group one metals covered in the video?

  • React with oxygen
  • React with chlorine
  • React with water (to be covered in the next video)
• What is the name of group one in the periodic table?

  Alkali metals
• How many electrons do all group one metals have in their outer energy level?

  One electron
• What happens when lithium reacts with oxygen?

  Lithium forms lithium oxide
• How does the reactivity of sodium compare to lithium when reacting with oxygen?

  Sodium reacts more rapidly than lithium
• What compound is formed when potassium reacts with oxygen?

  Potassium oxide
• What trend is observed in the reactivity of group one metals as you move down the group?

  The reactivity increases as you move down the group
• What happens to the outer electron of lithium when it reacts with oxygen?

  It moves to the oxygen atom
• What charge does a lithium ion have after reacting with oxygen?

  Positive one charge
• What charge does an oxide ion have after lithium reacts with oxygen?

  Negative two charge
• How can you write the equation for the reaction between lithium and oxygen?

  4Li + O$_2$ → 2Li$_2$O
• What do all group one metals have in common regarding their reaction with oxygen?

  They all react in the same way
• What compound is formed when lithium reacts with chlorine?

  Lithium chloride
• What happens to the outer electron of lithium when it reacts with chlorine?

  It moves to the chlorine atom
• What type of ion does lithium become after reacting with chlorine?

  Positive lithium ion
• What type of ion does chlorine become after reacting with lithium?

  Negative chloride ion
• How can you write the equation for the reaction between lithium and chlorine?

  2Li + Cl$_2$ → 2LiCl
• What are the general trends in the reactivity of group one metals with oxygen and chlorine?

  • React rapidly with oxygen
  • React rapidly with chlorine
  • Reactivity increases down the group
• What are the key characteristics of group one metals?

  • Soft metals
  • One outer electron
  • Form positive ions when reacting
• What are group one metals also known as?

  Alkali metals
• How many electrons do all group one metals have in their outer energy level?

  One electron
• What happens to the reactivity of group one metals as we move down the group?

  The reactivity increases