Studied by 0 peopleWhat is a periodic table?
A list of elements arranged in order of increasing atomic number.
What are metals and non-metals?
Elements can be classified based on their properties, with metals typically being shiny, malleable, and forming bases, while non-metals form acids.
Define alkali metals.
Group 1 elements in the periodic table with properties like silvery appearance, low density, and reactivity with water to form metal hydroxide and hydrogen.
Define Halogens.
Group 7 elements in the periodic table, non-metals occurring as diatomic molecules, with trends of increasing color darkness and melting/boiling points down the group.
Define noble gases.
Group 8 elements in the periodic table, inert gases with full valence shells, unreactive due to their stable electron configuration.
What are Physical Properties of grp 1 metals?
Silvery/shiny when freshly cut
Soft (easily slice with a knife) – become softer as you move down the group
Low density – float on water
Conduct electricity
Note
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