groups in the periodic table

• what is group 0 called?

  noble gases
• do noble gases have a high or low boiling point?

  low boiling point
• do the attractive forces become stronger or weaker down the noble gases?

  they become stronger
• are noble gases reactive or not?

  they are completely unreactive (inert)
• what is group 1 called in the periodic table?

  alkali metals
• do group 1 metals have a high or low boiling point?

  low
• are group 1 metals hard or soft?

  soft (can cut with a knife)
• how many electrons does group 1 have in their outshell?

  one
• alkali metals (group 1) react with water to create what?

  metal hydroxide and hydrogen
• when lithium is added to water what can you see when observing it?

  fizzes and becomes smaller until is disappears.
• when sodium is added to water what can you see when observing it?

  fizzes rapidly, melts to form a ball, becomes smaller until it disappears.
• when potassium is added to water what can see when observing it?

  fire, small explosion
• when group 1 reacts with oxygen what does it form?

  metal oxides
• when alkali metals react with oxygen what happens?


  burn vigorously when heated and placed in a gas jar of oxygen.
• give two features of alkali metals as you go down the group (group 1)


  the atoms become larger, the outer electron becomes further away from the nucleus , the force of attraction between the nucleus and the outer electron decreases, the outer electron is lost more easily.
• what are group 7 called?


  halogens
• what happens to the halogens boiling and melting points as you go down the group?

  higher
• when halogens react with metals what do they produce?


  salt
• what happens to the halogen fluorine when it reacts with iron wool?


  cold iron wool burns to produce white iron fluoride.
• what happens to the halogen chlorine when it reacts with iron wool?

  hot iron wool burns vigorously to produce orange-brown iron chloride.
• what happens to the halogen bromine when it reacts with iron wool?

  iron bromide is formed
• what happens to the halogen iodine when it reacts with iron wool?


  iron iodide is formed
• give two features of halogens as you go down the reactivity group


  atoms become larger, the outer-shell becomes further from the nucleus, halogen becomes less reactive.