The Periodic Table Flashcards
What is the periodic table a method of?
method of classifying elements and its use to predict properties of elements
What is the change from metallic to non-metallic
character across a period?
Metallic character decreases
How is the number of occupied shells determined?
determined by the period number
How is the number of valence electrons determined?
determined by the group number
What are the physical properties of Group I Metals? (3)
Soft
Grey, shiny when cut quickly tarnishes
Relatively low mp and bp + density
What is the chemical trend in Group I Metals?
gets more reactive as you go down the group
What are the physical trends in Group I Metals? (2)
gets softer and lower mp and bp as you go down the group
density of metals increase as you go down group
What is produced when alkali metals react with water?
alkali metal + water => metal hydroxide + hydrogen
What are the physical properties of Halogens? (4)
poisonous/strong smell, coloured, poor conductors, non metals
What are the physical trends in Halogens? (2)
gets a darker colour and higher mp and bp as you go down the group
What is the chemical trend in Halogens? (2)
gets less reactive as you go down the group
What is halide displacement?
when a more reactive halogen displaces a less reactive halogen from an ionic compound.
What are the properties of transition metals? (5)
Hard and strong High density High mp and bp Coloured compounds Have more than once valency
What is monoatomic?
exist as single atom
What is diatomic?
exist as a two atom molecule
