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Color is a physical property. However, change in color is a sign of a chemical reaction.
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
No, drawing copper into wire is a physical change because the chemical composition of copper remains the same throughout the process. The transformation involves only a change in shape and size, not in the chemical properties of the copper atoms.
When a copper wire is heated in a Bunsen burner flame, the copper's color changes to become a glowing red. It won't be restored to its original appearance after cooling. Instead, it becomes a black material called copper (II) oxide, which is 79.9% copper and 20.1% oxygen (was 100% copper before it was burned). This chemical change occurred as the oxygen in the air combined with the copper during the heating process.
No, copper wire is a physical property of copper. Chemical properties describe how a substance interacts with other substances to form new substances, while physical properties describe the characteristics of a substance without changing its chemical composition.
Color is a physical property. However, change in color is a sign of a chemical reaction.
Stretching wire into copper is a physical change because the composition of the material remains the same. The rearrangement of copper atoms in the wire does not alter the chemical identity of the substance.
If you meant to ask, "Is stretching copper into wire a physical or chemical change", it's a physical change.
No, drawing copper into wire is a physical change because the chemical composition of copper remains the same throughout the process. The transformation involves only a change in shape and size, not in the chemical properties of the copper atoms.
When a copper wire is heated in a Bunsen burner flame, the copper's color changes to become a glowing red. It won't be restored to its original appearance after cooling. Instead, it becomes a black material called copper (II) oxide, which is 79.9% copper and 20.1% oxygen (was 100% copper before it was burned). This chemical change occurred as the oxygen in the air combined with the copper during the heating process.
No, copper wire is a physical property of copper. Chemical properties describe how a substance interacts with other substances to form new substances, while physical properties describe the characteristics of a substance without changing its chemical composition.
This is a physical change. Although you could say that the copper atoms are all moving around each other and changing which other atoms they are bonded to, you haven't reacted two substances to produce a different compound, so no chemical reaction. No reaction, ergo not a chemical change.
Bending a copper wire is a physical change because the copper itself does not undergo a chemical reaction. The arrangement of copper atoms simply changes temporarily when the wire is bent, but the properties of copper remain the same.
Heating copper wire in the presence of air at high temperatures causes a chemical change because it leads to the oxidation of copper. When exposed to oxygen, copper reacts to form copper oxide, resulting in a new substance with different properties. This transformation involves a rearrangement of atoms and bonds, characteristic of a chemical change, as opposed to a physical change where the substance remains the same.
Physical. It is simply changing the shape or configuration of solid copper to another shape. Chemical changes cannot be reversed.
The color change of iron wire when it rusts is a chemical change because it involves a reaction with oxygen in the air to form iron oxide. This new substance has different properties than the original iron.
Cutting a copper wire in half is an example of a physical change. This is because the process alters the wire's size and shape but does not change its chemical composition or properties. The copper atoms remain intact, and the material can still conduct electricity just as it did before being cut.