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Physical change: the steel wool only changes the black pot's shape and in doing so reveals another color in the pot or the color of the substance that the pot is made from; it would still be the same thing but there would be all the parts of the pot, just it would be in different pieces.
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When silver coins are found in ancient shipwreck's they are coated with a black crust What question could you decide whether the silver underwent a chemical or physical change?
You would need to know if the silver underwent change that left the silver as it was originally, (in this case, having a black substance attach to it) or a change that made the silver into a new substance (like tarnishing). If the silver is still the same before and after the change, it was a physical change. If the substance is changed into a different substance after the change, it is a chemical change.
When silver coins are found in ancient shipwrecks they are coated woth a black crust what question could you ask to help ypu decide wheather the silver underwent a chemical change or a physical change?
To determine whether the black crust on the silver coins is the result of a chemical or physical change, one could ask: "Does the black crust alter the chemical composition of the silver beneath it?" If the crust is simply a layer of oxidation or corrosion that can be removed without changing the underlying silver, it suggests a physical change. Conversely, if the crust involves a new substance formed through a reaction with the environment, it indicates a chemical change.
Is taking out your best silver spoons and know that it is very dull and it has black dots on them is it a chemical change or physical change?
Taking out silver spoons that are dull and have black dots on them involves a physical change, as the appearance of the spoons has changed but their chemical composition remains the same. The black dots are likely tarnish, which is a result of a chemical reaction with sulfur or oxygen in the air. Cleaning the spoons can restore their shiny appearance without altering the silver itself. Therefore, the tarnishing is a chemical change, but the act of taking them out is a physical change.
Is silver tarnishing is a chemical change?
Yes, silver tarnishing is a chemical change. It occurs when the silver reacts with sulfur compounds in the air to form silver sulfide, which gives silver a black or brownish tint. This chemical reaction cannot be easily reversed, unlike a physical change.
Is dull and have black spots on silver spoons a chemicals or physical change?
The dullness and black spots on silver spoons are primarily a result of a chemical change, specifically the formation of silver sulfide when silver reacts with sulfur compounds in the air. This tarnishing alters the silver's surface properties and appearance, indicating a chemical reaction has occurred. Cleaning the spoon can remove the tarnish, but the underlying chemical change is not reversed, as it involves the formation of a new substance.
When silver coins are found in ancient shipwreck's they are coated with a black crust What question could you decide whether the silver underwent a chemical or physical change?
You would need to know if the silver underwent change that left the silver as it was originally, (in this case, having a black substance attach to it) or a change that made the silver into a new substance (like tarnishing). If the silver is still the same before and after the change, it was a physical change. If the substance is changed into a different substance after the change, it is a chemical change.
Is taking out your best silver spoons and know that it is very dull and it has black dots on them is it a chemical change or physical change?
Taking out silver spoons that are dull and have black dots on them involves a physical change, as the appearance of the spoons has changed but their chemical composition remains the same. The black dots are likely tarnish, which is a result of a chemical reaction with sulfur or oxygen in the air. Cleaning the spoons can restore their shiny appearance without altering the silver itself. Therefore, the tarnishing is a chemical change, but the act of taking them out is a physical change.
Is a silver teapot turning black a chemical or physical change?
It is a chemical change but it can be reversed since that cahnge is only on the surface. It is merely an oxidization that occurs when silver is exposed to oxygen and has no contact with oil (which blocks the pores of the metal from reacting with oxygen).
Is black tea a physical change or chemical change?
physical change
Is silver tarnishing is a chemical change?
Yes, silver tarnishing is a chemical change. It occurs when the silver reacts with sulfur compounds in the air to form silver sulfide, which gives silver a black or brownish tint. This chemical reaction cannot be easily reversed, unlike a physical change.
Is dull and have black spots on silver spoons a chemicals or physical change?
The dullness and black spots on silver spoons are primarily a result of a chemical change, specifically the formation of silver sulfide when silver reacts with sulfur compounds in the air. This tarnishing alters the silver's surface properties and appearance, indicating a chemical reaction has occurred. Cleaning the spoon can remove the tarnish, but the underlying chemical change is not reversed, as it involves the formation of a new substance.
Is it a physical or chemical change when you take out your best silver spoons and noticed that they are very dull and have some black spots?
The dullness and black spots on your silver spoons indicate a chemical change, specifically tarnishing, which occurs when silver reacts with sulfur compounds in the air to form silver sulfide. This process alters the chemical composition of the silver, resulting in a different appearance. Although it can be reversed through polishing, the initial tarnishing is a chemical reaction.
Is a silver ring tarnishing a chemical change?
Yes, the tarnishing of a silver ring is a chemical change. It occurs when silver reacts with sulfur compounds in the air, forming silver sulfide, which appears as a black tarnish. This process alters the chemical composition of the silver, making it a distinct chemical change rather than a physical one. Once tarnished, the original properties of the silver cannot be restored without a chemical reaction to remove the tarnish.
Is black crust a physical or chemical change?
The formation of black crust on an object is a chemical change because it involves a chemical reaction between the surface of the object and the surrounding environment, resulting in the formation of a new substance with different properties.
Is silver tarnishing chemical change or chemical property?
Tarnishing of silver is a chemical change. It occurs when silver reacts with sulfur-containing substances in the air to form silver sulfide, which is the black tarnish seen on the surface of the metal. This change is irreversible and alters the composition of the silver.
What is the physical description of silver?
Silvery is white, but often with a black tarnish. Has no odor a texture of soft.
Should you polish an old silver dollar?
You should never polish old coins, even if they have turned dark or black.
