BITESIZE GCSE REACTIVITY SERIES

July 25, 2019 posted by

Its surface naturally forms a very thin layer of aluminium oxide that keeps water away from the metal below. Note that aluminium can be difficult to place in the correct position in the reactivity series during these experiments. The method used to extract a metal from its ore depends upon the stability of its compound in the ore, which in turn depends upon the reactivity of the metal. Evaluate the hazards and the precautions needed to reduce the risk of harm. Platinum is placed below gold in the reactivity series. In general, the more reactive a metal is: Here is the reactivity series including carbon and hydrogen: One way to remember the order of metals in the reactivity series is to think of a phrase or sentence, which uses the first letter of each metal in the series.

Reactions with steam Magnesium reacts slowly when it is first added to water, but a layer of insoluble magnesium hydroxide forms. As gold is so unreactive, it is found as the native metal and not as a compound. Method use a dropping pipette to place some zinc sulfate solution in one row of a dimple tray use clean dropping pipettes to fill the other rows of the dimple tray with magnesium sulfate solution, copper II sulfate solution and silver nitrate solution place a piece of zinc metal in each dimple in the solutions in the first column of the dimple tray place pieces of magnesium and copper in the other columns of the dimple tray observe and record the changes in the solutions or metal samples Reacting metals with metal salt solutions Results describe any changes in the colour of the metal or the metal salt solution put the results in a table Analysis use the results to construct a reactivity series for the metals used write equations for any reactions that occurred Evaluation Question Some students did not test combinations of the same metal, such as magnesium and magnesium sulfate solution. Magnesium reacts slowly when it is first added to water, but a layer of insoluble magnesium hydroxide forms. A metal cannot displace itself, so no reaction would take place. However, copper can be extracted using carbon or hydrogen. Metals more reactive than carbon, such as aluminium, are extracted by electrolysis, while metals less reactive than carbon, such as iron, may be extracted by reduction with carbon.

Platinum will not react with dilute acids. A good way to remember the order of a reactivity series of metals is to use the first letter of each one to make up a silly sentence.

The tables bitesizs how the elements react with water and dilute acids: More reactive metals have a greater tendency to lose electrons and form positive ions. Reactions with steam Magnesium reacts slowly when it is first added to water, but a layer of insoluble magnesium hydroxide forms. As gold is so unreactive, it is found as the native metal and not as a compound.

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Reactivity series and extraction of metals

There are a number of ways that you could investigate a displacement reaction. Note that zinc and iron can be displaced from their oxides using carbon but not using hydrogen. Aluminium is unusual because it is a reactive metal that does not react with water.

More slowly than zinc.

In this reaction, magnesium is oxidised – it bihesize oxygen to form magnesium oxide – and water is reduced – it loses oxygen to form hydrogen. Specified practical – ggcse displacement reactions Displacement in solutions There are a number of ways that you could investigate a displacement reaction. The method used to extract a metal from its ore depends upon the stability of its compound in the ore, which in turn depends upon the reactivity of the metal.

For example, magnesium reacts rapidly with dilute hydrochloric bjtesize Reduction by carbon or carbon monoxide. When this layer is removed, the observations are more reliable.

A metal’s relative resistance to oxidation is related to its position in the reactivity series – in general, the lower down a metal is, the greater its resistance to oxidation Reactions of metals with dilute acids When a metal reacts with a dilute acida salt and hydrogen are formed.

Examples of ores include: Evaluate the hazards and the precautions needed to reduce the risk of harm.

Aims To investigate displacement reactions and produce a reactivity series for metals. In general, the more reactive a metal is: Method use a dropping pipette to place some zinc sulfate solution in one row of a dimple tray use clean dropping pipettes to fill the other rows of the dimple tray with magnesium sulfate solution, copper II sulfate solution and silver nitrate solution place a piece of zinc metal in each dimple in the solutions in the first column of the dimple tray place pieces of magnesium and copper in the other columns of the dimple tray observe and record the changes in the solutions or metal samples Reacting metals with metal salt solutions Results describe any changes in the colour of the metal or the metal salt solution put the results in a table Analysis use the results to construct a reactivity series for the metals used write equations for any reactions that occurred Evaluation Question Some students did not test combinations of the same metal, such as magnesium and magnesium sulfate solution.

Question Platinum is placed below gold in the reactivity series. Very reactive metals, such as aluminium, form stable oxides and other compounds. It is important in this practical activity to use appropriate apparatus and methods. Platinum is placed below gold in the reactivity series.

When a metal reacts with water, a metal hydroxide and hydrogen are formed.

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Metals – Revision 1 – KS3 Chemistry – BBC Bitesize

Metals below hydrogen in the reactivity series do not react with dilute acids, and both gold and platinum are placed below hydrogen. Metals more reactive than carbon, such as aluminium, are extracted by electrolysis, while metals less reactive than carbon, such as iron, may be extracted by reduction with carbon. This is because its protective aluminium oxide layer makes it appear to be less reactive than it really is.

This includes the safe use and careful handling of substances. Its surface naturally forms a very thin layer of aluminium oxide that keeps water away from the metal below. However, copper can be extracted using carbon or hydrogen.

The reactivity series In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. Reactivity and extraction method The table displays some metals in decreasing order of reactivity and the methods used to extract them. It does not need to be chemically separated. Electrolysis is commonly used to extract these metals and requires a lot of electric current energy to reduce them to extract the metal.

This table summarises some reactions of metals in the reactivity series. Note that aluminium can be difficult to place in the correct position in the reactivity series during these experiments.

Reactions of metals with water When a metal reacts with water, a metal hydroxide and hydrogen are formed. Metal Method Potassium Electrolysis Sodium Electrolysis Calcium Electrolysis Magnesium Electrolysis Aluminium Electrolysis Carbon Non-metal Zinc Reduction by carbon or carbon monoxide Iron Reduction nitesize carbon or carbon monoxide Tin Reduction by carbon or carbon monoxide Lead Reduction by carbon or carbon monoxide Rexctivity Non-metal Copper Various chemical reactions Silver Various chemical reactions Gold Various chemical reactions Platinum Various chemical gcsd Metals more reactive than carbon, such as aluminium, are extracted by electrolysis, while metals less reactive than carbon, such as iron, may be extracted by reduction with carbon.

Metal ions absorbed through the skin. Which metal is the most reactive? The table displays seried metals in decreasing order of reactivity and the methods used to extract them. In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom. This protects the metal and stops it reacting.

A reactivity series of metals could include any elements. Hydrogen is always given off when a metal reacts with water, steam or a dilute acid.