Group 1 of Periodic Table Flashcards
What do all Group 1 elements have in common?
All have 1 electron in their outer shell
What do all periods (rows) have in common
they have the same number of shells
What are group 1 elements known as?
Alkali Metals
What are the properties of group 1 metals?
Soft metals (cut easily), Low densities and melting points, very reactive (only have to lose one electron)
What happens to the melting point as you go down the group?
They decrease due to decreasing attractive forces between outer electrons and positive ions
What happens to reactivity as you go down the group?
Get more reactive as the force of attraction gets weaker
What is the equation when lithium reacts with water?
lithium + water → lithium hydroxide + hydrogen
What is observed when lithium reacts with water?
Relatively slow reaction, Fizzing, Lithium moves on the surface of the water
What is the equation when sodium reacts with water?
sodium + water → sodium hydroxide + hydrogen
What is observed when sodium reacts with water?
More vigorous fizzing, Moves rapidly on the surface of the water, Dissolves quickly
What is the equation when potassium reacts with water?
potassium + water → potassium hydroxide + hydrogen
What is observed when potassium reacts with water?
Reacts more vigorously than sodium, Burns with a lilac flame, Moves very rapidly on the surface, Dissolves very quickly
What is the equation when lithium reacts with oxygen?
lithium + oxygen → lithium oxide
What is the equation when sodium reacts with oxygen?
sodium + oxygen → sodium oxide
What is the equation when potassium reacts with oxygen?
potassium + oxygen → potassium oxide
