Group 1 - Chem

• What are properties?

  They are the characteristics of a substance
• What do you call the Group 1 elements?

  Alkali metals
• Why do elements in the same group have similar properties?

  Because they have the same number of electrons in the outer shell.
• They have high densities and MP

  No, they have low density and MP.
• Are the Group 1 elements reactive?

  Yes, they are very reactive
• The reactivity decreases down the group.

  It increases.
• Atoms get smaller down the group

  They get bigger.
• Electrons get further away from the outer shell down the group.

  Correct
• Does the attraction increase between the OS and nucleus?

  NO, it decreases.
• The outer shell is removed more harder.

  It is removed easily.
• Which type of solution do they produce when they react with water?

  Alkali solution
• How does lithium react with water?

  > Slow reaction > Fizzing can be seen and heard
• What can you observe when sodium reacts with water?

  > Large amounts of heat
• How does potassium react with water?

  > Reacts violently > Burns with a lilac flame
• Are the Group 1 elements hard to cut?

  They are soft and gets softer down the group.