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It depends how you mean dull. Dull by wear or dull by oxidation? If it just becomes dull without being touched, then it is a chemical change. Metals readily react with non metals ie Oxygen. This will form a metal oxide layer on the exposed regions. This is why you need to sandpaper down some of the more reactive metals, when using them for conductivity experiments in school, as the oxide reduces conductivity.
What else can I help you with?
Is shiny metal a physical property or chemical property?
Shiny metal is a physical property because it can be observed without changing the chemical composition of the metal. It is a characteristic related to how light interacts with the surface of the metal.
A shiny black solid was heated and formed a purple vapour which on cooling became a black solid again Is this a physical or chemical reaction and explain?
This is a physical change. The solid is Iodine, which sublimes on heating to form gaseous Iodine. When cooled, it sublimes again to form solid Iodine. Since this change is only the change of physical states, and since there's no change in the chemical structure of Iodine, this is a physical change.
Is a Luster of gold jewelry is physical change?
Yes, the luster of gold jewelry is a physical change. It does not alter the chemical composition of the gold, but rather represents the way light interacts with the surface of the gold, giving it its shiny appearance.
Is the luster of silver jewerly a physical property?
Yes, the luster of silver jewelry is a physical property. Luster refers to the shininess or reflective quality of a material's surface, which is a characteristic that can be observed without changing the chemical composition of the silver.
What acids can make a rusty penny a shiny penny?
Common household acids like vinegar (acetic acid) can be used to remove rust from a penny, making it shiny again. The acid reacts with the rust (iron oxide) on the penny's surface, dissolving it and revealing the shiny metal beneath. It is important to note that strong acids or chemical solutions should be handled with care and proper safety precautions.
Is cleaning a penny with vinegar and salt a physical or chemical change?
Cleaning a penny with vinegar and salt is a chemical change. The vinegar (acetic acid) reacts with the salt (sodium chloride) to form a chemical compound that removes the tarnish on the copper surface of the penny. This reaction changes the composition of the penny's surface, making it appear shiny and clean.
Physical property of a copper penny?
Shiny and hard
Is luster a chemical or phisycal change?
Luster is a physical property, not a chemical change. Luster refers to the way light interacts with the surface of a material, causing it to either appear shiny or dull. It does not involve any alteration of the chemical composition of the material.
Is Gold shiny a chemical property or physical property?
gold is an element
Is shiny metal a physical property or chemical property?
Shiny metal is a physical property because it can be observed without changing the chemical composition of the metal. It is a characteristic related to how light interacts with the surface of the metal.
A shiny black solid was heated and formed a purple vapour which on cooling became a black solid again Is this a physical or chemical reaction and explain?
This is a physical change. The solid is Iodine, which sublimes on heating to form gaseous Iodine. When cooled, it sublimes again to form solid Iodine. Since this change is only the change of physical states, and since there's no change in the chemical structure of Iodine, this is a physical change.
Is a Luster of gold jewelry is physical change?
Yes, the luster of gold jewelry is a physical change. It does not alter the chemical composition of the gold, but rather represents the way light interacts with the surface of the gold, giving it its shiny appearance.
Is the luster of silver jewerly a physical property?
Yes, the luster of silver jewelry is a physical property. Luster refers to the shininess or reflective quality of a material's surface, which is a characteristic that can be observed without changing the chemical composition of the silver.
Is luster a typical physical property of metals?
Luster is a physical property of crystals.
How can you use the word penny in a sentence?
I found a shiny penny!
What acids can make a rusty penny a shiny penny?
Common household acids like vinegar (acetic acid) can be used to remove rust from a penny, making it shiny again. The acid reacts with the rust (iron oxide) on the penny's surface, dissolving it and revealing the shiny metal beneath. It is important to note that strong acids or chemical solutions should be handled with care and proper safety precautions.
Is luster a chemical or physical or chemical reaction?
Luster is a physical property, not a chemical reaction. It refers to how light is reflected off the surface of a material, giving it a shiny appearance. It is based on the arrangement of atoms in the material and not on any chemical changes.
