Coins in Western countries have been made of metal for centuries. Please post a new question with the name of the specific country or countries you're referring to.
Metal coins can weigh heavy, and are not easy to carry many coins with you.
It would depend on the denominations of the coins. Post new question with more information.
this is a soft white precious metallic element having the highest electrical and thermal conductivity of any metal. It occurs in Argentite and in free form. It is used in coins, tablewear jewelry and photography
The difference in mass between a 1990 coin and a new one is negligible for all practical purposes, unless the currency has been redesigned. (For example, in the early 1990's the UK issued new 5p and 10p coins to replace much heavier old coins.)
because old 2p coins are made out of bronze. Bronze is made out of tin and copper, these metals aren't magnetic. However, new 2p coins just look like they are made out of copper, however they only have a coating of copper on them, but the inside is steel, this is called copper plated steel. They are magnetic because steel is magnetic and makes up the majority of the coin.
New coins are typically made of metal. Most coins are composed of a combination of metals such as copper, nickel, zinc, or aluminum. These metals are chosen for their durability and resistance to wear and tear.
Neither. Coins are mixtures of two or more metallic elements.
Metal coins can weigh heavy, and are not easy to carry many coins with you.
It's usually made out of metal or a metallic material.
You can put coins in an mouldy wrapping and some of the mould spores will rub off onto the coins. This will make the coins LOOK mouldy but, being metallic, they will not actually be mouldy.
Copper wire is the best, glass is the worst. Coins are not bad, aluminium cans are OK for small amounts of current. Modern steel coins are worse than the old coins with copper in them.
Early forms of money included coins. The coins were made from metals available in those ages.
What do you mean by "What is the new coins?"
It's called a metallic luster.
It depends on the value and when they were made. Lower value coins (10, 20, or 50 centavos) are currently made from stainless steel. Peso coins are bi-metallic (stainless steel/aluminum bronze). Circulating 20 and 50 peso coins are bi-metallic with a silver center. You may consult the related links below for more information.
The two related links below show New Zealand's predecimal coins and New Zealand's current coins.
metallic alloy