Metals And Non Metals Flashcards
Name a metal which does not react with cold as well as hot water, but reacts with any other physical state of water
Aluminium
Name a metal which does not react with any physical state of water
Copper
Why is copper used to make hot water tanks? Where is steel is not?
Copper is a better conductor of heat as compare to steel therefore hot water tanks are made of copper.
A metal which is preserved in kerosene
Sodium
A lustrous coloured non-metal
Iodine
Metal which can melt while kept on palm
Gallium and caesium
A metal which is a poor conductor of heat
Lead and mercury
Metal which can be easily cut with a knife
Sodium
Metal which is a liquid at room temperature
Mercury
Tell which is the best conductor of heat
Silver and copper
Sodium metal is kept immersed in kerosene
Sodium metal is so reactive that it reacts vigourously with oxygen present in air. It catches fire and starts burning when kept open in the air. Sodium metal is stored under kerosene oil to prevent its reaction with oxygen, moisture and carbon dioxide in air.
Wires are used in electrical connections
Copper is the next best conductor of electricity after silver metal so electric wires are made up of copper as silver being a costly metal and cannot be used to make electrical wires
What is malleable?
Party which allows the metals do we have word into thin sheets. Gold and silver metal are the best malleable metal.
What is ductility?
The property which allows the metals to be drawn into thin wires. Gold is the most ductile metal.
What is anodising?
Is a process of forming thick layer of oxide of aluminium oxide over the articles of aluminium metal
Why Are ionic compounds solid
Ionic compounds are solids because your oppositely charged ions attract one another strongly and form a regular crystal structure
What Happens when metals react with water
Metals react with water to form metal oxide and hydrogen gas. Metal oxides are soluble in water for that, dissolve it in to form better hydroxides
Does a metal, not release hydrogen gas or reacting with that of nitric acid?
Nitric acid is a strong oxidising agent and oxidise is the release to hydrogen gas to a water
Why Are carbonate and sulphide ores converted into oxides during the process of extraction
Carbonate and sulphide ores are converted into oxides as a reduction of oxides makes it easier to extract metals from them
What type of oxides are formed by metals?
Metals form basic oxides with oxygen, these basic oxides turn red litmus into blue
Define amphoteric oxides
Some metal oxides show both acidic as well as basic behaviour goes metal oxides which react with both acids as well as basis to form salt and water or known as amphoteric oxides
