The most reactive metals belong to group 2.
What are the observations of potassium?
Effervescence
Metal floats and moves on surface of water
Ignites with lilac flame
Melts into silvery ball
Turns red
Turns colourless
Produces oxygen
What is the word equation for Sodium?
Sodium + water --> Sodium Oxide + Hydrogen
Sodium + water --> Sodium Oxide + Carbon Dioxide
Sodium + water --> Sodium Hydroxide + Hydrogen
Name the gas produced when group 1 metals react with water.
Hydrogen
Carbon Dioxide
Oxygen
The reactivity of group 1 metals decreases going down the group.
Metal + steam --> Metal ? + ?
Hydroxide + Hydrogen
Oxide + Hydrogen
Oxide + Carbon dioxide + Hydrogen
Metal + Oxygen --> Metal Oxide
In a displacement reaction, a ? reactive metal will displace a ? reactive metal from a solution of its salt.
more, less
less, more
-, equally reactive
What are the observations of Zinc + Copper (II) Sulfate --> Zinc Sulfate + Copper?
Blue solution turns colourless
Colourless solution turns blue
Red-brown solid forms
Bluish solid forms
Silver zinc metal disappears
Copper disappears
Which of these metals would be extracted by electrolysis?
Potassium
Sodium
Magnesium
Silver
Zinc
Copper
Iron
Aluminium
Apart from haematite, what other materials are used in the extraction of Iron in the blast surface?
Limestone
Coke
Hot air
Water
Nitrogen
