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#Reactivity series chemistry gcse full#

add magnesium to suitable solutions, eg magnesium sulfate, zinc sulfate, copper sulfate.The order of reactivity supported by suitable experiments from: Order of reactivity - magnesium > zinc > copper. This question has been written by a Bitesize consultant as a suggestion to the type of question that may appear in an exam paper. The order of reactivity of magnesium, zinc and copper can be determined by carrying out displacement reactions.Įxplain how displacement reactions can be used to show the reactivity of these three elements. less expensive than extraction from ores/electrolysis.(some) metals do not corrode/break down so they remain a long time in landfill.landfill sites will not fill up as quickly.less damage to environment by mining/quarrying.saves (finite) resources/stops the metal (ore) running out.recycled metals can be made into something useful.steel used for bridges/making stainless steel cutlery.When no longer required, the metal articles are thrown away as waste or recycled.Įxplain why it is important to recycle these metals, rather than put them in general household waste. The metals are made into many useful things. Iron for making steel, copper and aluminium is obtained from substances found in the Earth's crust. iron is not found as an uncombined metal.(hot) carbon does not reduce aluminium oxide.aluminium is placed in the highest position.aluminium is very reactive/most reactive.electricity is the most powerful method (of extraction).electricity needed to extract aluminium.gold is found uncombined as it doesn't react easily.Your answer should include the following: Įdexcel question courtesy of Pearson Education Ltd. Use the information given about the methods of extracting these metals to explain where in this reactivity series iron, gold and aluminium are placed. The list shows part of the reactivity series with iron, gold and aluminium missing. aluminium is extracted from aluminium oxide using electrolysis.gold is found uncombined in the Earth's crust.iron is extracted from iron oxide by heating with carbon.

Metals are extracted by different methods which are linked to their position in the reactivity series of metals:

#Reactivity series chemistry gcse full#

You do not usually need to include all of them to gain six marks, but you do need to write in full sentences, linking them logically and clearly. The answers shown here give marking points as bullet points. For example, a question about fertilisers could include ideas about covalent substances, acids and alkalis, chemical calculations, and effects on the environment. These questions bring together ideas from two or more topics. Six-mark questions may be synoptic questions. evaluate - you must review information, including identifying strengths and weaknesses, and make a supported conclusion.devise - you must plan or invent a procedure using your scientific knowledge and understanding.explain - you must give reasons or explanations.describe - you need to give an account but no reason.Six-mark questions often use these command words:

maintain a sustained line of reasoning, rather than getting lost or bogged down.

write clearly and link ideas in a logical way.

use appropriate scientific words and terms.

support explanations using scientific knowledge and understanding.

It is wise to plan your answer rather than rushing straight into it, otherwise you may stray away from the key points. These require longer answers than the structured questions. Reacts on heating to form a black solid.Six-mark questions are extended open response questions. Reacts as a powder on very strong heating. Reacts readily when heated as iron filings. Yellow solid forms which changes to white on cooling. Reacts steadily when heated forming a yellow solid which changes to white on cooling. Reacts readily with strong heating as a powder. Slowly forms a surface oxide at room temperature Yellow/orange flame and white solid formed. Tarnishes when freshly cut at room temperature This table summarises the reactions of some metals in the reactivity series. We can examine the reactivity of metals by observing their reactions with oxygen, water, steam and whether it displaces other metals in displacement reactions.

the more easily it loses electrons to form positive ions (cations).

the more vigorously it reacts with other substances.

In general, the more reactive a metal is: The reactivity series of metals is a chart listing metals in order of decreasing reactivity.