Shiny and hard
It has a boiling boint of exactly 2035 degree. This is for the usage of growth rings of the copper penny
It is a physical property. Malleability is a physical property in lots of metals (including copper). It is not a characteristic property, because it is not unique to copper. (Other metals share the same property).
The ability of copper to be drawn into a thin wire is a physical property, as it involves a change in its physical state without altering its chemical composition.
The property of copper being a good conductor of electricity is a physical property because it can be observed without changing the chemical composition of copper. It is a characteristic based on the arrangement of electrons in the copper atoms.
Copper is one of the best materials that embodies the physical property of conductivity. It is widely used in electrical wiring and electronics due to its high conductivity. Silver is another material known for its exceptional conductivity, but it is less commonly used due to its cost.
Color is a physical property. However, change in color is a sign of a chemical reaction.
Yes, it is. You aren't altering the chemical composition at all - it's still copper - you are merely changing its shape.
Putting a penny in lemon juice would cause a chemical change because the lemon juice reacts with the copper in the penny to create copper oxide, which changes the chemical composition of the penny.
Density is a physical property of copper, not a chemical property. Density is a measure of how tightly packed the atoms are within a substance, whereas a chemical property describes how a substance interacts with other substances in a chemical reaction.
Electricity itself is not a physical property. Conductibility, which is the ability to transfer electricity, is a physical property. For instance, Copper has high conductibility.
A penny is made up of metals - copper and zinc both of which have lustrous physical properties
Yes, reactivity to water is a chemical property of copper, not a physical property. Copper does not react with water at room temperature, but it can slowly react with water when exposed to high temperatures or steam to form copper oxide.