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a- gold is highly reactive metal than iron that is why gold is found in free state while iron is found in the form of its ore.
d- copper is a better conductor of electricity in comparison to Silver that's why the wires are made with copper.
c- in electrochemical series iron is placed higher than the copper that's why iron is more reactive than copper. according to the rule only the metals which are at the top of series can replace the metal from their salt.
b- sodium is the member of alkali metal group which react highly with water and produce large amount of heat that's why sodium is reacted to cold water while iron doesn't react with cold water due to its low reactivity.
e- cooking utensils are made of metal because to cook food conducting of heat is necessary while the handles are made of wood because they are bad conductor of heat and this property prevent the harms of users.
f- sodium is a highly reactive element it can react instantaneously in atmosphere that's why it is stored in kerosene to prevent its reaction.
g- as sodium White Phosphorus is stored under the water to prevent its reaction in atmosphere. White Phosphorus is the free form of phosphorus. open denoted by P4.
d- copper is a better conductor of electricity in comparison to Silver that's why the wires are made with copper.
c- in electrochemical series iron is placed higher than the copper that's why iron is more reactive than copper. according to the rule only the metals which are at the top of series can replace the metal from their salt.
b- sodium is the member of alkali metal group which react highly with water and produce large amount of heat that's why sodium is reacted to cold water while iron doesn't react with cold water due to its low reactivity.
e- cooking utensils are made of metal because to cook food conducting of heat is necessary while the handles are made of wood because they are bad conductor of heat and this property prevent the harms of users.
f- sodium is a highly reactive element it can react instantaneously in atmosphere that's why it is stored in kerosene to prevent its reaction.
g- as sodium White Phosphorus is stored under the water to prevent its reaction in atmosphere. White Phosphorus is the free form of phosphorus. open denoted by P4.
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D- Copper is used for making electrical wires while silver is not because, copper generally have high melting point. They do not melt easily after heating for a quite long time , copper is a better conductor than silver
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