
What are the classification of materials?
I am trying to understand the different types of materials and their classification. I want to know the broad categories of materials and possibly some examples that fall under each category.


What are Australian coins made of?
I'm curious about the composition of Australian coins. I want to know what materials they are made of, whether it's a certain type of metal or an alloy of different metals.


What are American coins made of?
I'm curious about the composition of American coins. I want to know what materials are used to make them. Specifically, I'd like to understand the different metals or alloys that constitute various denominations of US coins.


What are Canadian coins made of?
I'm curious about the composition of Canadian coins. I want to know what materials they are made of, whether it's a mix of metals or a specific type of metal. Are Canadian coins made of the same material as other countries' coins?


What are Bali coins made of?
I'm curious about the composition of Bali coins. I want to know what materials were used to make them. Are they made of metal, or some other type of material? What gives them their unique characteristics?
