Why heating a platinum wire is a reversible change but heating a magnesium wire is an irreversible?

Heating a platinum wire, the final product is again platinum wire (as platinum is a noble metal and does not react with air), i.e. no change in composition and is a physical change. Heating magnesium wire forms MgO i.e. composition changes a new substance white powder of magnesium oxide is formed is a chemical change.

Is heating a platinum wire a physical or chemical change?

Heating a platinum wire is a physical change because when we heat platinum or any other metallic-solid substance the substance gets changed from the solid state to the molten state due to the kinetic energy.

What type of change is heating of platinum wire?

Answer: Explanation: It is a physical change because the original substance platinum remains same as the final product platinum, so there is no change in composition and properties.

What happens when we heat a platinum wire?

When platinum wire is heated, no new substance is formed. The wire becomes white hard but is still platinum.

How is heating a platinum wire different from heating a magnesium wire?

Answer: A platinum wire is a reversible change because it can be reversed but heating a magnesium wire is an irreversible change because it cannot be reversed.

When platinum wire is heated no new substance is formed the wire become white hot but is still platinum .what would you say about this change?

Answer: It is a physical change. Explanation: Since no new substance was formed after the change and it is reversible.

Is heating a magnesium wire a physical change?

(a) Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change. Magnesium reacts with Oxygen in the air and forms magnesium oxide which cannot be undone. (b) Zinc nitrate dissolves in water and hence is a physical change.

What type of change is heating a magnesium wire?

irreversible change
Physical and Chemical Changes | Exercise (a) Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.

What is a platinum wire?

Platinum wire is durable, flexible, and tarnish-resistant. Platinum wire scrap sent in by customers. Platinum Wire is a very profitable type of scrap Specialty Metals Smelters and Refiners can recycle for you or your company.

When platinum wire is heated no new substance formed?

Which of the following is reversible change?

Melting, boiling, evaporation, freezing, condensation, and disintegration are examples of reversible transformations. Melting wax, freezing ice, and boiling water that evaporates as steam and condenses back to water are a few examples. Hence option C is correct.

What uses platinum wire?

Platinum Wire is used in many applications including gasket or o-ring fabrication, thermocouples, electrical contacts, and heater coils.

Is heating a platinum wire reversible or irreversible change?

Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change. Heating a platinum wire, the final product is again platinum wire (as platinum is a noble metal and does not react with air), i.e. no change in composition and is a physical change.

What is the difference between heating a platinum and magnesium wire?

(a) Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change. (b) The addition of zinc nitrate to water is a physical change but addition of zinc to dilute nitric acid is a chemical change.

Is a magnesium wire reversible in an argon atmosphere?

It depends. If you start with a magnesium wire at -230 ºC and heat it to -229 ºC on an argon atmosphere, it is a completely reversible change, Anonymous. Have a nice day and may your magnesium wire stay reversible.

What happens when heat is applied to platinum?

Platinum is a noble metal what is noble metal that does not easily react with oxygen, so what happens when platinum is Heated when heat is applied when it is heated its color color changes okay the color of platinum changes and when this thing is cooled What happened?