C4.1

• What is the characteristic of Group 1 elements regarding their outer electrons?


  All Group 1 elements have 1 outer electron.
• What do Group 1 elements typically do with their outer electrons?


  They typically lose electrons to form pairs.
• What are the similarities and differences between Group 1 and Group 7 elements?


  Similarities:

  • Both groups react with other elements.

  
  

  Differences:

  • Group 1 elements are metals, while Group 7 elements are non-metals.
  • Group 1 elements have 1 outer electron; Group 7 elements have 7 outer electrons.
• How are Group 1 metals stored?


  Group 1 metals are stored in oil.
• What happens when Group 1 elements react with water?


  They react with water to form metal hydroxides and hydrogen gas.
• What is the trend in reactivity as you go down Group 1?


  The atoms become more reactive as you go down Group 1.
• What is the trend in melting points as you go down Group 7?


  Melting points decrease as you go down Group 7.
• What is the result of a displacement reaction in Group 7 elements?


  A more reactive Group 7 element displaces a less reactive one.
• What is the general equation for a metal reacting with water?


  Metal + Water → Metal hydroxide + Hydrogen
• What is the balanced equation for sodium reacting with water?


  $2Na +$$2H_2O → 2NaOH +$$H_2$
• Why are Group 1 elements called 'alkali metals'?


  They react with water to form alkalis.
• What is the process of metal displacement reactions?


  • Metals compete to lose electrons.
  • A more reactive metal displaces a less reactive metal in an ionic compound.
  • The more reactive metal loses electrons more easily.
• What is the result of the reaction between chlorine and potassium bromide?


  Chlorine + potassium bromide → potassium chloride + bromide.
• What do all Group 0 elements have in common?


  They are unreactive and have a full outer shell.
• How do Group 7 elements exist in nature?


  Group 7 elements exist as diatomic molecules.
• What are the most reactive metals in the provided list?


  Most reactive metals:

  • Magnesium
  • Zinc
  • Iron
  • Copper
  • Silver
• What is the state of fluorine at room temperature?


  Fluorine is a gas at room temperature.
• What is the color of chlorine gas?


  Chlorine gas is green.
• What is the color of bromine at room temperature?


  Bromine is red and liquid at room temperature.
• What is the color of iodine at room temperature?


  Iodine is grey and solid at room temperature.
• What is the state of potassium at room temperature?

  Potassium is a solid at room temperature.
• What is the state of lithium at room temperature?

  Lithium is a solid at room temperature.
• What is the state of sodium at room temperature?


  Sodium is a solid at room temperature.
• What is the state of cesium at room temperature?

  Cesium is a solid at room temperature.
• What is the state of rubidium at room temperature?

  Rubidium is a solid at room temperature.
• What is the state of bromine at room temperature?


  Bromine is a liquid at room temperature.
• What is the state of iodine at room temperature?


  Iodine is a solid at room temperature.
• What is the state of chlorine at room temperature?


  Chlorine is a gas at room temperature.