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Why heating copper wire in the presence of air at high temperature a chemical change Why?
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.
What is a substance that is malleable and is a solid at room temperature?
How about I tell you what substance is not a solid metal at room temperature. Mercury Everything else is a solid metal at room temperature.
Is heating copped pan in the oven a chemical change?
Heating a copper pan in the oven does not result in a chemical change; it primarily involves a physical change. The temperature increase may cause the copper to expand and change its physical state, but the chemical composition of the copper remains the same. A chemical change would involve a transformation that alters the molecular structure, such as oxidation or reacting with another substance. In this case, the copper remains copper, regardless of the heat applied.
Does running an electric current through copper change the identity of the substance?
No, running an electric current through copper does not change the identity of the substance. The process may cause the copper to undergo physical changes, such as heating or electrolysis, but the chemical composition of copper remains the same. The atoms of copper retain their identity throughout the process.
Is an copper a mixture or substance?
copper is a substance
Why heating copper wire in the presence of air at high temperature a chemical change Why?
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.
Is copper sulphate a physical change or chemical?
Copper sulfate dissolving in water is a physical change as no new substance is formed. However, if copper sulfate is heated to decomposition, it would be a chemical change because a new substance is formed.
If the resistance of a substance decreases as its temperature increases it is said to have what type of temperature co-efficient?
copper
What is a substance that is malleable and is a solid at room temperature?
How about I tell you what substance is not a solid metal at room temperature. Mercury Everything else is a solid metal at room temperature.
Is heating copped pan in the oven a chemical change?
Heating a copper pan in the oven does not result in a chemical change; it primarily involves a physical change. The temperature increase may cause the copper to expand and change its physical state, but the chemical composition of the copper remains the same. A chemical change would involve a transformation that alters the molecular structure, such as oxidation or reacting with another substance. In this case, the copper remains copper, regardless of the heat applied.
Which has a higher heat capacity copper or styrofoam?
Copper has a higher heat capacity than styrofoam. This means that copper can absorb more heat before its temperature increases compared to styrofoam.
Does running an electric current through copper change the identity of the substance?
No, running an electric current through copper does not change the identity of the substance. The process may cause the copper to undergo physical changes, such as heating or electrolysis, but the chemical composition of copper remains the same. The atoms of copper retain their identity throughout the process.
Is an copper a mixture or substance?
copper is a substance
A sheet of copper can be pounded into a bowl a physical or chemical change?
Pounding a sheet of copper into a bowl is a physical change because the copper is still the same substance before and after the change. The change in shape does not alter the chemical composition of the copper.
By heating green copper carbonate so that it changes to black copper oxide will this be a chamical or physical change?
The change from green copper carbonate to black copper oxide is a chemical change because it involves a chemical reaction where the chemical composition of the substance is altered. The color change indicates a new substance has formed, making it a chemical change.
What temperature does copper change from a solid to a liquid?
120.3 deg.c
Three things that you observe in a chemical change of mixture Mg-CuSO4?
Formation of a new substance: When magnesium reacts with copper sulfate, the blue color of copper sulfate fades as copper metal is formed, indicating a chemical change has occurred. Release of gas: In this reaction, bubbles of gas may be observed, which could be hydrogen gas being evolved as magnesium displaces copper from copper sulfate. Temperature change: The reaction between magnesium and copper sulfate is exothermic, meaning it releases heat. The mixture may feel warm or hot to touch during the reaction, indicating a temperature change has taken place.
