1) Reactions Of Metals In Water Flashcards
What are the elements in GROUP 1 of the periodic table?
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb) Caesium (Cs), Francium (Fr)
Metals have (high/low) melting + boiling points?
High - this means they are solids at room temperature
What type of metals are in Group 1 of the periodic table?
Alkali Metals
Describe Lithium
A grey, dull solid
Soft and shiny when cut
Describe Sodium
Light grey, dull solid
Quite soft and quite shiny when cut
Describe Potassium
A dark grey, dull solid
Extremely soft and extremely shiny when cut
Describe reaction of Lithium in water
Floats, moves around
Effervesces
Eventually disappears
UI turns purple
Describe reaction of sodium in water
Floats, moves around very quickly
Effervesces
Eventually disappears
UI turns purple
Melts and forms a sphere/ball
Orange sparks
Describe Potassium reaction in water
Floats, moves around quickly
Melts and forms a sphere
Ignites with a lilac flame
Eventually disappears
Reaction happens extremely fast
What is the pattern in reactions of Group 1 metals in water?
They get more reactant as you go down Group 1
State the equation for Lithium when it reacts with water
Lithium + water -> Lithium hydroxide + hydrogen
State the equation for sodium when it reacts in water
Sodium + water -> sodium hydroxide + hydrogen
State the equation for potassium when it reacts with water
Potassium + water -> potassium hydroxide + hydrogen
What are the reactions like for Rubidium and Caesium in water?
They have a big reaction!
What is the limit for metals for them to react with water?
THEY MUST BE MORE REACTIVE THAN HYDROGEN
