Groups Chemical Families Learning About GroupsFamilies Group 1
Groups Chemical Families
Learning About Groups/Families �Group 1: Alkali Metals �Group 2: Alkaline Earth Metals �Groups 3 – 12: The Transition Metals �Groups 13 – 16: The BCNO Family �Group 17: The Halogens �Group 18: The Noble Gases
Group 1: The Alkali Metal Family � Common • • • Properties: Metals Soft Silvery white Extremely reactive Will burn skin upon touch Tarnish rapidly React violently with water Easily form salts with Halogens Each burns a different color
Group 2: The Alkaline Earth Metals � Common • • • Properties: Soft Silvery-white High melting points High densities Reactive. Will react with water May be handled by humans Oxidize or tarnish in air Never found in nature in pure form Good conductors of electricity Each element burns a different color Many used in fireworks
Groups 3 – 12: Transition Metals �Common Properties: • All metals • Hard • Strong • Shiny • Very high melting and boiling points (except Hg) • Good conductors of heat and electricity • Most will dissolve in acid
Groups 13 – 16: The BCNO Family � Sometimes divided into 2 or 4 families � Very diverse family � Named by symbol at the top of column � Contains metals, non-metals, and metalloids � Some are gases, most are solids � Reactive, but selective � No hard, fast rules that fit all elements in this family except members in each column tend to bond with other elements in a similar fashion
Group 17: The Halogens �Common • • • Properties: Poisonous Non-metals Very reactive Never found in pure forms in nature Poor conductors of electricity Combine with alkali metals to form a family of compounds called “salts”
Group 18: The Nobel Gases �Common • • • Properties All gases Odorless Tasteless Colorless Extremely NON-reactive
Lanthanide Series �Common • • • Properties Soft, silvery metals Reactive Will burn in oxygen or air Tarnish rapidly in air Poor conductors of electricity Will spark when struck
Actinide Series �Common Properties: • All radioactive • Silvery metals • Reactive
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