Why should a magnesium ribbon be cleaned

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Why should a magnesium ribbon be cleaned before burning it? Find the answer to this question and access a vast question bank customized for students. Ans : Magnesium is a very active compound chemically. Similarly, seawater is the most found substance as it is also found in the underground brines. Magnesium has the chemical formula Mg and is an important element of the periodic table. Hence a very famous question is asked regarding magnesium.

Why should a magnesium ribbon be cleaned

Hint: Magnesium is a very reactive metal. When it is kept in the open air it can react with the gases present in the air. Cleaning will remove those impurities formed due to the reaction with air. Complete Answer:. Let us see why it is important to clean the surface of the magnesium ribbon before burning it. Metals which are in the second group of the periodic table are called the alkaline earth metals. They are very reactive since they have just two electrons in their outer electron shell. This coating hinders the burning of the ribbon as this layer does not burn easily. To do so we have to clean the surface of the ribbon. Cleaning the surface of the magnesium ribbon will remove the oxide layer from the surface and thus it will allow the ribbon to burn effectively to get the desired result. The magnesium ribbon burns in air producing intense heat and producing bright white light. The oxygen from the air reacts with magnesium to form the magnesium oxide. Always remember that magnesium only reacts with oxygen in the air to form an oxide coating on its surface but it does not react with the atmospheric nitrogen at all. This is because gaseous nitrogen is very inert and it does not react with magnesium.

In Indian rupees, 1 trillion is equal to how many crores? They are very reactive since they have just two electrons in their outer electron shell.

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In association with Nuffield Foundation. Students weigh magnesium and heat it in a crucible, noting the change in weight they can discover the formula for magnesium oxide. This experiment is included in our Conservation of mass video, along with supporting resources , including illustrated technician notes , integrated instructions , worksheets, a structure strip and more. The practical activity takes around 30—45 minutes, depending on the competence of the class. Students should all be standing and should wear eye protection. Students with long hair should tie it back. It is a good idea for students to practice lifting the lid on and off the crucible and the crucible off the pipe clay triangle before they start. This has the added bonus of checking that all the tongs are functioning correctly.

Why should a magnesium ribbon be cleaned

A physical change occurs when there is no change in the composition of a substance and no change in the chemical nature of the substance. A chemical change is a change that causes a change in the chemical properties of matter, resulting in the formation of a new substance. As an example, consider the burning of oil or fuel. Heat is evolved or taken in, the formation of bubbles, gas, and fumes, as well as a change in the colour of the reactants, can take place when they form a product. To carry out the Burning of magnesium ribbon in air and classify it as physical and chemical changes. During this process, two elements, magnesium and oxygen, react to form the compound magnesium oxide. Such reactions are referred to as combination reactions. The burning of magnesium ribbon is a combination reaction.

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Please login :. Why should a magnesium ribbon be cleaned before burning it? Always remember that magnesium only reacts with oxygen in the air to form an oxide coating on its surface but it does not react with the atmospheric nitrogen at all. We hope now you understand why a magnesium ribbon is cleaned before burning it. Facebook Whatsapp. A question might pop up if there is any catalyst present to speed up this reaction if anyone is unable to clean the magnesium ribbon. Ans : Magnesium is a very active compound chemically. As it forms this white layer, it will not burn anymore. Answer Magnesium is a highly reactive element When kept open in the air, it reacts with the atmospheric oxygen to form Magnesium Oxide MgO The MgO layer does not burn or slows down the burning process and thus should be removed So the Magnesium ribbon should be cleaned with a sandpaper before burning to prevent the impurities deposited on the Magnesium ribbon from interfering in the reaction When cleaned, only pure Magnesium is present and burns in air with a dazzling flame. Hence a very famous question is asked regarding magnesium. This happens when it burns in the presence of oxygen and moisture. Cleaning will remove those impurities formed due to the reaction with air.

Hint: Magnesium is a very reactive metal. When it is kept in the open air it can react with the gases present in the air. Cleaning will remove those impurities formed due to the reaction with air.

Displaying ads are our only source of revenue. Book a free demo. Always remember that magnesium only reacts with oxygen in the air to form an oxide coating on its surface but it does not react with the atmospheric nitrogen at all. Hence to stop the formation of this white layer, impurities which are not needed should be cleaned from the surface of the magnesium ribbon, and only the pure magnesium should be burned. Hint: Magnesium is a very reactive metal. Please login :. We hope now you understand why a magnesium ribbon is cleaned before burning it. Unfortunately, it is not possible to do this at this point in time, but as we progress with our research work, we are quite optimistic we will develop some techniques for this too. Trending Questions. Old search 2. Hi, it looks like you're using AdBlock :. Trending search 1.