Magnesium ribbon is cleaned with the sand paper before use because its surface is covered with certain type of grease, in the presence of which the Mg cannot work proper and faster.
The reactants during burning paper are oxygen and the paper itself, which is mainly composed of cellulose. The products of burning paper are carbon dioxide, water vapor, ash, and some other combustion byproducts.
Magnesium is an extremely reactive metal. When stored, it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper for removing this layer so that the underlying metal can be exposed to air.
The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction; it is simply rearranged. An experiment to demonstrate this is burning a piece of paper: the mass of the paper before burning will be the same as the mass of the ashes, smoke, and gases produced after burning. This experiment confirms that the total mass before and after the reaction remains constant.
Yes, burning paper is an example of an exothermic reaction because it releases heat and light energy.
Paper must be heated to start burning because heat is required to break down the cellulose fibers in the paper and initiate the chemical reaction of combustion. This process releases energy in the form of heat and light, causing the paper to continue burning once it has started.
Microscope lenses should be cleaned with lens paper before each use. This maximizes the clarity.
NAICS Code(s) 339944 (Carbon Paper and Inked Ribbon Manufacturing)
The movement of the ribbon in a typewriter is typically caused by the rotation of the print cylinder or platen, which advances the paper as you type. The ribbon is then positioned between the paper and the typebars, allowing the ink to be transferred onto the paper when a key is struck.
the paper will end up running out
A Paper Ribbon-Carrier is an article from Transactions of the American Microscopical Society, Volume 30.
because burning of paper is a chemical change while tearing of paper is a physical change
From an art store.
The reactants during burning paper are oxygen and the paper itself, which is mainly composed of cellulose. The products of burning paper are carbon dioxide, water vapor, ash, and some other combustion byproducts.
Burning cotton will smell like burning paper because both cotton and paper come from plants and burning wool smells like burning hair because both wool and hair comes from animals.
Impact printers.
Burning is a chemical process, not a property.
Magnesium is an extremely reactive metal. When stored, it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide is quite stable and prevents further reaction of magnesium with oxygen. The magnesium ribbon is cleaned by sand paper for removing this layer so that the underlying metal can be exposed to air.