BBC BITESIZE GCSE SCIENCE CHEMISTRY REACTIVITY SERIES

Reactions of metals with water When a metal reacts with water, a metal hydroxide and hydrogen are formed. Aluminium is unusual because it is a reactive metal that does not react with water. Non-metals in the reactivity series It is useful to place carbon and hydrogen into the reactivity series because these elements can be used to extract metals. When this layer is removed, the observations are more reliable. 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 by carbon or carbon monoxide Tin Reduction by carbon or carbon monoxide Lead Reduction by carbon or carbon monoxide Hydrogen Non-metal Copper Various chemical reactions Silver Various chemical reactions Gold Various chemical reactions Platinum Various chemical reactions 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.

Question Platinum is placed below gold in the reactivity series. Reduction with carbon is often used to extract these metals and requires less energy to reduce them to extract the metal. Note that aluminium can be difficult to place in the correct position in the reactivity series during these experiments. Non-metals in the reactivity series It is useful to place carbon and hydrogen into the reactivity series because these elements can be used to extract metals. This protects the metal and stops it reacting. Platinum will not react with dilute acids.

More slowly than zinc. Aluminium is unusual because it is a reactive metal that does not react with water. For example, magnesium reacts rapidly with dilute hydrochloric acid: Reduction bitdsize carbon is often used to extract these metals and requires less energy to reduce them to extract the metal.

In general, the more reactive a metal is: Magnesium reacts slowly when it is first added to water, but a layer of insoluble magnesium hydroxide forms. It is useful to place carbon and hydrogen into the reactivity series because these elements can be used xhemistry extract metals. However, copper can be extracted using carbon or hydrogen.

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Less reactive metals, such as iron, form less stable oxides and other compounds. This table summarises some reactions of metals in the reactivity series.

Very reactive metals, such as aluminium, form stable oxides and other compounds. When a metal reacts with a dilute acida salt and hydrogen are formed. When a metal reacts with water, a bitesze hydroxide and hydrogen are formed.

As gold is so unreactive, it is found as the native metal and not as a compound. Question Platinum is placed below gold in the reactivity series. Note that zinc and iron can be displaced from their oxides using carbon but not using hydrogen.

Note that aluminium can be difficult to place in the correct position in bietsize reactivity series during these experiments. Reactions with steam Magnesium reacts slowly when it is first added to water, but a layer of insoluble magnesium hydroxide forms. 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.

Reactivity series – Revision 1 – GCSE Chemistry (Single Science) – BBC Bitesize

This is because its protective aluminium oxide layer makes it appear to be less reactive than it really is. 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. Platinum will not react with dilute acids.

The more reactive the metal, the more rapid the reaction is. Hydrogen is always given off when a metal reacts with water, steam or a dilute acid. Observations of the way that these elements react with water, acids and steam enable us to put them into this series. Reactions of metals with water When a metal reacts with water, a metal hydroxide and hydrogen are formed.

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The tables show how the elements react with water and dilute acids: It does not need to be chemically separated. The reactivity series of metals is a chart showing metals in order of decreasing reactivity.

Metals – Revision 1 – KS3 Chemistry – BBC Bitesize

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. Reduction by carbon or carbon monoxide.

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. In a reactivity series, the most reactive element is placed at the top and bbcc least reactive element at the bottom. When this chemistru is removed, the observations are more reliable.

The reactivity series of metals The reactivity series of metals is a chart showing metals in order of decreasing reactivity.

Reactivity series and extraction of metals

Metals below hydrogen in the reactivity series do not react with dilute acids, and both gold and platinum are placed below hydrogen. For example, sodium reacts chemstry with cold water: The table displays some metals in decreasing order of reactivity and the methods used to extract them.

Electrolysis is commonly used to extract these metals and requires a lot of electric current energy to reduce them to extract the metal. More reactive metals have a greater tendency to lose electrons and form positive ions.