Metals And Nonmetals Flashcards
Most abundant metal on earths crust
Aluminium
Most abundant non metal on earths crust
Oxygen
Liquid metal
Mercury
Elements which form positive ions by losing electrons
Metals
Elements which form negative ions by gaining electrons
Non metals
Most malleable metal
Cu and Au
Most ductile
Au Al and Cu
Good metal heat and electricity conductors
Silver
Poor metal heat conductor
Lead
Soft metals
(Alkali metals) sodium , potassium
Metals with low melting and boiling point
Sodium potassium
Heat conducting non metal
Carbon
Lustrous non metal
Iodine
Hard non metal
Diamond
Non metal with High melting and boiling point
Diamond
Metal+Oxygen
Metal Oxide
Reactivity series
K Potassium
Na Sodium
Ca Calcium
Mg Magnesium
Al Aluminium
Zn Zinc
Fe Iron
Pb Lead
H Hydrogen
Cu Copper
Hg Mercury
Ag Silver
Au Gold
Are metal oxides basic or acidic?
Basic
Explain the reaction of Sodium or Potassium with oxygen
There are night reactive metals so when they make contact with the oxygen at room temperature, they form basic oxide. This reaction is so vigorous that they catch on fire and start burning.
Why are sodium and Potassium kept under kerosine
They are kept under kerosene to prevent them from catching on fire, when they make contact with oxygen.
When and how does magnesium react with oxygen?
Magnesium reacts with oxygen upon heating and it produces a while powder.
What is an Amphoteric oxide?
It is a oxide which is both basic and acidic in nature
Examples of Amphoteric oxide.
Zinc aluminium
When does aluminium react with oxygen and what does it produce?
It produces an amphoteric oxide when it burns while being heated.
What does Al give upon reacting with a. Base or an acid.
Metal salt+ Water
