Year 11 students, check the dates!
Understanding of chemical changes began when people began experimenting with chemical reactions in a systematic way and organizing their results logically. Knowing about these different chemical changes meant that scientists could begin to predict exactly what new substances would be formed and use this knowledge to develop a wide range of different materials and processes. It also helped biochemists to understand the complex reactions that take place in living organisms. The extraction of important resources from the earth makes use of the way that some elements and compounds react with each other and how easily they can be ‘pulled apart’.
You should be able to:
Recall the order of common metals in the reactivity series.
Write word equations for the metals listed in the reactivity series reacting with oxygen, water, and acid and balance given symbol equations.
Predict observations for the metals listed in the reactivity series reacting with oxygen, water, and acid.
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You should be able to:
Give the position of carbon and hydrogen in the reactivity series.
Predict whether or not a displacement reaction will occur.
Explain the reactivity of metals in terms of how they form positive ions.
Describe how to write ionic equations for displacement reactions.
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You should be able to:
Define the terms oxidation and reduction.
Identify species that are being oxidised and reduced in a chemical reaction.
Explain why some metals are found uncombined in the Earth’s crust.
Evaluate the extraction process to obtain a metal from its ore.
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You should be able to:
Describe the different reactions that can be used to make salts.
Explain how to make a pure, dry sample of a soluble salt (RP)
Name the salt produced when the name of the reactants is give or suggest the reactants used when a salt and any other products are named.
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You should be able to:
Describe the pH scale and give an example of an alkali, neutral, base, and acidic chemical.
Describe how solutions can be acidic or alkali and the relationship between alkalis and bases.
Use ionic equations to explain how solutions can be acidic or alkali.
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You should know:
Recall examples of strong and weak acids.
Describe how an acid or alkali can be concentrated or dilute, weak or strong.
Use ionic equations to explain how solutions can be acidic or alkali.
Explain how the concentration of hydrogen ions relates to the pH number.
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You should be able to:
Define electrolysis.
Write a word equation and balanced symbol equation to describe electrolysis of a molten ionic compound.
Describe electrolysis in terms of movement of ions.
Predict the products at each electrode for the electrolysis of a molten ionic compound.
Study Resources:
You should be able to:
State that oxygen can be produced at the anode and hydrogen can be produced at the cathode when some solutions are electrolysed.
Write a balanced symbol equation including state symbols for the overall electrolysis of a solution.
Predict the products at each electrode for the electrolysis of a molten ionic compound or its solution.
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You should be able to:
Write a word equation to describe the electrolysis of aluminium oxide.
Describe the electrolysis of aluminium oxide.
Explain why electrolysis is an expensive metal extraction method and illustrate this with the extraction of aluminium.
Explain why cryolite is added to aluminium oxide in the industrial extraction of aluminium.
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You should be able to:
State the products of the electrolysis of brine and a use for each.
Predict the products of electrolysis of a solution.
Explain the electrolysis of brine using half equations, classifying reactions at the electrode as oxidation or reduction.
Compare and contrast the electrolysis of a compound in solution with its electrolysis as a molten compound.
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