~ Describe the trend in reactivity and melting point going down Group I.

~ Describe the trend in reactivity and melting and boiling point going down Group VII.

~ Explain why, going down Group I, the reactivity of the element increases.

~ Explain why, going down Group I, the melting point and boiling point of the element decreases.

~ Explain why Group O elements are inert.

~ Explain why, going down Group VII, the reactivity of the element decreases.

~ Explain why, going down Group VII, the melting point and boiling point of the element increases.

~ Describe the general trend in the melting points of the elements in Period 3. Explain the trends in the melting points, in terms of bonding and structure of the elements.

~ What are the observations when Group I metals react with cold water?

~ Explain why, going from left to right in the same Period, the atomic radii of the element decrease.