What are metals? Give any two examples.
Metals are elements which form electropositive ions by losing electrons.
For eg. Iron, copper, gold, etc.
Write short note on occurrance of iron in nature.
Iron is of the reactive metals. So, it doesn't occur in free state in nature. It forms different types of compounds like oxides sulphides, chlorides, hydroxides, carbonates, etc. A little amount of iron is present in haemoglobin of our blood.