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What physical and chemical properties of gold make it useful as a coating for space vehicles?
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∙ 12y ago
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Is frying a chicken physical or chemical change?
Physical changes can be undone. It is not possible to unfry a chicken. The heat casues chemical changes in the meat and in any coating.
What is the chemical name for a green coating on a coin?
For copper or some copper alloys coins the coating is hydrated copper carbonate.
Is rusting of a can physical or chemical process?
it is a chemical process, as rust is the chemical reaction of the oxidation of iron. rust, or iron oxide, is formed when iron reacts with oxygen in the air. this can be prevented by either already reacting the iron with something like sulphur, or by coating the iron with a thin inert layer such as oil or plastic.
Magnets destroy floppy disks what else destroys it?
Floppy disks are made of materials that degrade with time. Material degradation include cracks and chemical changes such as oxidation. Physical force will break a floppy disk. Heat will melt the disk or hasten oxidation of the material. Spilling something on a disk creates a coating that can alter the physical movement of the disk. Other chemicals can react with the material of the disk and change its physical or chemical characteristics.
What is the physical and chemical characteristics of tin and carbon?
Allotropes are forms of an element with different physical and chemical properties. This white tin has a melting point of 232°C (450°F), a boiling point of 2,260°C (4,100°F), and a density of 7.31 grams per cubic centimeter.
Is frying a chicken physical or chemical change?
Physical changes can be undone. It is not possible to unfry a chicken. The heat casues chemical changes in the meat and in any coating.
When A bronze statue develops a green coating (patina) over time is physical change or chemical?
It is chemical. The copper in bronze turns green when it oxidizes.
What is a physical reaction of Rhodium?
whitening coating of gold
What is the chemical name of the pale grey coating on the sodium?
oxidised
Are water heater elements chemical?
No, they are metal with an insulation coating
What is the chemical name for a green coating on a coin?
For copper or some copper alloys coins the coating is hydrated copper carbonate.
Is electroplating a chemical or physical change?
Electroplating is a chemical change. Solutions containing metal ions are placed in a tank, and the piece of metal to be plated is connected to the electrical supply to become the cathode. The metal ions in solution are attracted to the cathode where they are reduced (reduction is gain of electrons) to form a metal coating.
Can spray paint be used as a vehicle exterior coating?
Yes. Most vehicles are spray painted
What is the chemical name for the black coating on an old coin?
copper oxide
Is rusting of a can physical or chemical process?
it is a chemical process, as rust is the chemical reaction of the oxidation of iron. rust, or iron oxide, is formed when iron reacts with oxygen in the air. this can be prevented by either already reacting the iron with something like sulphur, or by coating the iron with a thin inert layer such as oil or plastic.
Is aluminum a physical or chemical property?
Physical properties-not magneticdensity- 2.7 g/mlextremely ductilesilvery white3rd most common elementChemical properties-Incompatible with oxidizers and acids
When a black coating forms on silver coins what is the nature of chemical phenomenon?
basic in nature
