• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Burning of magnesium metal

Extracts from this document...

Introduction

Elements are pure substances where all the atoms are same type. Chemical reactions join or split atoms to rearrange them. But they cannot change one element into another element, or anything simpler. Each element has a special name. For example carbon, oxygen and hydrogen, magnesium is all elements. Compounds are pure substances made by two or more elements join together by chemical bonds. This means that compounds will always exist as molecules, not separate atoms. For example when oxygen reacts with magnesium it formed a compound called magnesium oxide, MgO. Mixture is made from different substances that are not chemically joined together. For example powdered iron and powdered sulphur mixed together makes a mixture of iron and sulphur. They can be separated from each other without a chemical reaction For example air, sea water, and most rocks e.t.c. can be separated using chemical reaction. Most elements are metals reather than non-metals. ...read more.

Middle

I can't see air (oxygen) because it's gas at room temperature. Here is a diagram of magnesium and oxygen- During the reaction Magnesium burns very brightly when heated in air. Some metals are very reactive. They easily take part in chemical reactions to make new substances. Magnesium is like this. It is heated in a Bunsen burner; it ignites and burns with a brilliant white flame. By the action of fire, the magnesium reacts with the oxygen in the air and form magnesium oxide. Description after When two elements react together to form a compound, the compound is different to either of the two elements both of appearance and in physical properties. So the magnesium has gone grey powder. The oxygen reacted with magnesium and made it very light and dull. All substances have mass and therefore must be composed of atoms. These atoms and how they assemble themselves in the substance determines their chemical and physical properties. ...read more.

Conclusion

If a chemical process such as combustion or oxidation breaks the substance down to its constituent atoms then the substance is a "compound"(e.g., salt, sugar, water). Otherwise the substance is an "element" (e.g., copper penny, aluminium foil). Compounds are made up of molecules or salts. Elements are made up of single types of atoms. There are 9 types of energy. They are kinetic; heat, light, gravitational potential, chemical, sound, electrical, nuclear and elastic potential energy. Energy can't be created or destroyed. It can only transform to another form. In magnesium there was stored energy which is chemical energy. When it's got heat it produced a white flame so chemical energy turned into light energy. When it's got burn and the magnesium turned into grey powder the light energy transform into thermal (heat) energy. In a chemical reaction there is always the same number of particle before and after a reaction. Therefore, there is the same mass. This is called the conversation of mass. The particle in a chemical reaction doesn't destroy or increase; it's just rearrange to form a new substance. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Rate of reaction of hydrochloric acid on magnesium.

    5 graphs that had different concentrations of HCl and none of them contained an anomalous point. The best-fit line for all the lines had the plots either on it or very close to it so this is how it can be justified that my results from my experiment are accurate.

  2. The role of mass customization and postponement in global logistics

    Further downstream in the supply chain come the deferred assembly and deferred packaging options, both of which take place at theatre warehouses serving regions of the world or specific countries. Deferred assembly means that it is the final configuration of the product itself which happens at theatre warehouses rather than at production plants.

  1. Gold. For thousands of years, gold has been regarded as the finest and ...

    The hallmark would usually say '999.9 fine'). An easy way to convert from fineness to the percentage gold is to divide the 'fine' number by 10. So, for example, 750 fine = 75% pure gold, since 750 � 10 = 75. Gold is also measured in fineness.

  2. Densities of liquids

    Mass with distilled water(g) 12 22.14 47.52 127 19.45 44.66 141 19.97 45.02 124 20.30 45.59 45 19.86 45.32 102 20.60 45.58 144 20.66 45.74 Density of distilled water at 23?c = 0.999820 g/cm2 Find volume using density at 23?c .

  1. Investigation on the combustion of Alcohols.

    We can say that bond energy of the C-C 348kj/mol. Therefore as you increase the carbon atoms the more energy you need to put in and the more energy that is given out. This backs up my prediction and proves that my prediction was correct.

  2. Our experiment consisted of two samples of water containing unknown substances, and our objective ...

    Making sure the nozzle in the side of the Bunsen burner is fully closed, turn the tap on and, using a lighted splint, ignite the gas to a safety flame. 4. Slide the metal piece on the nozzle around slightly so it's about half open.

  1. should salt be banned?

    The body's dilution response causes the cells to become dehydrated, severely impairing health. Salt also throws off the blood's electrolyte balance (e.g., the sodium to potassium ratio) and acidifies the body, eroding health and impeding healing. Most illness cannot be overcome when salt is part of the diet.

  2. Investigating how much energy is produced when burning alcohols.

    Apparatus To perform the experiment, the following apparatus must be used: * Clamp * Measuring cylinder * Matches * Metal beaker * Alcohols * Safety goggles * Heatproof mat * Electronic scales -3- Jack Mariner Chemistry Coursework 2 Safety Precautions Although this experiment is very simple, safety must always be taken into account.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work