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Why paper around the wooden rod catches fire but not the paper around the metal rod?
The wooden rod can conduct heat more easily than the metal rod, allowing the paper near it to reach its ignition temperature faster. The metal rod has higher thermal conductivity, so it draws heat away from the paper more rapidly, preventing it from reaching the ignition temperature.
What is a metal rod mounted on the roof?
A metal rod is a long bar that is made out of steel or other metal materials. It can be used for construction.
Does magnesium turn into a metal when burnt?
No, magnesium is already a metal. When burnt, magnesium reacts with oxygen to form magnesium oxide, releasing a bright white light in the process.
What is the difference between paper clip and carbon rod?
A paper clip is a small piece of metal wire bent into a looped shape commonly used to hold papers together, while a carbon rod is a cylinder made of graphite material commonly used in batteries and electrical applications. Paper clips are typically flexible and used for temporary binding, while carbon rods are rigid and used for conducting electricity.
Why does paper not burn when wrapped around metal?
Paper does not burn when wrapped around metal because the metal acts as a heat sink, drawing heat away from the paper and preventing it from reaching its ignition temperature. The metal dissipates the heat quickly, creating a barrier between the fire and the paper.
Why paper around the wooden rod catches fire but not the paper around the metal rod?
The wooden rod can conduct heat more easily than the metal rod, allowing the paper near it to reach its ignition temperature faster. The metal rod has higher thermal conductivity, so it draws heat away from the paper more rapidly, preventing it from reaching the ignition temperature.
Wrap a thin paper strip tightly around an iron rod . try to burn the paper with candle while rotating the iron rod continuously . does it burn .explain your observation?
If you introduce the rod with the round strips into the flame of a candle, the paper will not catch fire. The fire will lick the paper but not burn down until the iron rod becomes hot. This is because iron rod just like any other metal is a good conductor of heat, it leads away the heat obtained by paper from the candle flames. Replace the iron rod by a wooden stick and paper will burn because wood is a poor conductor of heat. With copper rod the experiment is more successful.
Is burnt paper reversible or irreversible?
Irreversible,because when paper is burnt it is fully destroyed.
What is a physical change in paper?
burnt paper,wet paper
Will a charged polythene rod repel or attract paper?
A charged polythene rod will attract paper. When the rod is charged, it develops an electric field that exerts a force on the charged particles in the paper, causing the paper to be attracted to the rod.
What results when metal is burnt in oxygen?
Simple metal oxide.
What happens if a perspex rod is rubbed to a piece of paper instead of a polythene rod?
Rubbing a perspex rod against a piece of paper will likely transfer some electrons from the perspex to the paper, causing the perspex rod to become positively charged and the paper to become negatively charged. This can create an electrostatic attraction between the rod and the paper.
What are the similarities of paper clip and carbon rod?
paper clip is a metal which is ductile, malleable, luster, conductor, hard, opaque, and denser than other elements. carbon rod is a nonmetal which is brittle, insulator, and dull.
Why do negatively charged rod attacks metal?
A negatively charged rod can attract metal due to the phenomenon of electrostatic induction. When the rod approaches a neutral metal object, the negative charges in the metal repel, causing a redistribution of charges within the metal. This results in a positive charge accumulating on the side closest to the rod, creating an attractive force between the negatively charged rod and the positively charged side of the metal object. Thus, the rod appears to "attack" or attract the metal.
How do you put a metal rod into a hole in a metal cylinder but its too tight Do you heat the rod and cool the cylinder or cool the rod and heat the cylinder?
You should heat the metal cylinder and cool the metal rod. Heating the cylinder will cause it to expand, making it easier to insert the rod. Cooling the rod will cause it to contract, allowing it to fit into the hole more easily.
What is a metal rod mounted on the roof?
A metal rod is a long bar that is made out of steel or other metal materials. It can be used for construction.
What is the ageing of paper?
the ageing of paper is when the paper gets all old and brown. But it doesn't get burnt.
