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Why is platinum used for pacemakers?
platinum is a metal that never corrodes
What actually happens to the metal when it corrodes?
Corrosion in metallic chemistry terms is the oxidation of a metal object, forming the oxide of that metal. As with all redox, the metal loses electrons and the oxygen gains them; this creates ions which bond together, forming the oxide. Of course, these oxides are often weak and brittle, so they flake off and expose further metal to oxidation, continuing the process. Aluminium is notably reactive, but its oxide is quite strong and thus forms a protective coating over the object.
What happens during corrosion?
A reactants reacts with molecules to form corrosion gold and thats how babies are born
What metal corrodes the slowest in salt water?
The noble metals such as gold, silver, or platinum (etc.) do not readily corrode in salt water
Why are some metals reactive?
A reactive metal - say Aluminum, can be veiwed as corrosion resistant - but is actually not. What happens is that pure aluminum actually corrodes extremely quickly. A thin film of aluminum oxide forms on the surface - and it is that film that is extremely adherent but also very corrosion resistant. Rust on the other hand does not stick (adherent) to iron/steel. It spalls off allowing the iron underneath to corrode further.
When metal corrodes the metal atoms lose what?
electrons
What metal corrodes easily to form rusty oxide?
This metal is iron.
What happens to a metal bench when it is left outside in the rain?
when a metal bench is left outside in the rain it corrodes because some other metals in the reactivity series react fast with water
What gas is produced when acid corrodes metal?
hydrogen
Why does alcohol eat away metal?
The acidity of the alcohol corrodes the metal, "eating away" at it.
Is there any metal that corrodes less than platinum?
gold
Why is platinum used for pacemakers?
platinum is a metal that never corrodes
What does the term base or parent metal in an alloy mean?
base metal: a metal that oxidises or corrodes easily and i dont know what parent metal is..
What things corrode metal?
Corrosion of metal is caused by oxygen or oxidising substances, salty water and some medium strong acids
Which metal is kept under water?
I dont think there is a metal stored under water because they react with water and instead are stored in kerosene or oil. Water often corrodes the metal producing rust so i cant think of any metal that would be stored under water.
What actually happens to the metal when it corrodes?
Corrosion in metallic chemistry terms is the oxidation of a metal object, forming the oxide of that metal. As with all redox, the metal loses electrons and the oxygen gains them; this creates ions which bond together, forming the oxide. Of course, these oxides are often weak and brittle, so they flake off and expose further metal to oxidation, continuing the process. Aluminium is notably reactive, but its oxide is quite strong and thus forms a protective coating over the object.
What are the reasons for wanting to protect the metal once you have finished working with it?
so it don't scratch the metal off also so it don't rain on it in case it corrodes
