Transition Metals, Quantitative Chemistry and Industrial Processes | Edexcel GCSE Chemistry, Foundation tier (1CH0)
Transition Metals, Quantitative Chemistry and Industrial Processes
- 149 questions
- 13 subtopics
- Paper 1
- Paper 1
Transition Metals, Quantitative Chemistry and Industrial Processes is examined in Paper 1, Chemistry 1.
It covers transition metals and their properties, corrosion and electroplating, preventing rusting, alloys and alloy steels, how the uses of metals relate to their properties, carrying out an accurate titration, percentage yield, atom economy, the Haber process, fertilisers and ammonium salts, preparing ammonium sulfate in the lab and in industry, chemical cells and fuel cells and evaluating fuel cells.
Sample questions from Transition Metals, Quantitative Chemistry and Industrial Processes
Answer each one closed book first, then open the answer.
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Transition metals and their properties
State two typical physical properties of a transition metal.
Show the answer
Transition metals have high melting points and high densities. -
Corrosion and electroplating
What must the electrolyte contain when an object is copper plated?
Show the answer
It must contain copper ions in solution, such as copper(II) sulfate solution. -
Alloys and alloy steels
Suggest why adding a small amount of carbon to iron makes the metal much harder.
Show the answer
Carbon atoms are a different size from iron atoms, so they disrupt the layers and stop them sliding. -
How the uses of metals relate to their properties
Which two metals are alloyed to make magnalium, and why is the alloy useful in aircraft parts?
Show the answer
Magnalium is an alloy of aluminium and magnesium that is stronger than aluminium while keeping a low density. -
Percentage yield
A process has a theoretical yield of 20.0 g and a percentage yield of 45%. Calculate the actual yield.
Show the answer
0.45 × 20.0 = 9.0 g. -
Atom economy
State the atom economy for making ammonia by N₂ + 3H₂ → 2NH₃ and explain your answer.
Show the answer
It is 100%, because ammonia is the only product so none of the reactant atoms are wasted. -
Fertilisers and ammonium salts
Which of the elements in a fertiliser does a plant need in order to make proteins?
Show the answer
Nitrogen. -
Preparing ammonium sulfate in the lab and in industry
Give two ways in which the industrial production of ammonium sulfate differs from the laboratory preparation.
Show the answer
Industry works on a far larger scale and runs continuously, rather than making one small batch at a time by hand.
The 13 subtopics
One subtopic is one session. Work down the list.
| Subtopic | What it covers | Questions |
|---|---|---|
| Transition metals and their properties | Where the transition metals sit in the periodic table, their high melting points and densities, coloured compounds, iron as the ammonia catalyst, catalytic activity, and how sodium is untypical. | 8 |
| Corrosion and electroplating | Corrosion as oxidation, rusting and the need for oxygen and water, rust as hydrated iron(III) oxide, why magnesium dulls but gold does not, and electroplating with the object as the cathode, a suitable electrolyte, and why chromium and silver plating are used. | 14 |
| Preventing rusting | Preventing rusting by painting, oiling and drying agents that exclude oxygen and water, sacrificial protection with magnesium blocks, galvanising with zinc, and why a tin coating protects only while it is unbroken. | 9 |
| Alloys and alloy steels | What an alloy is, why pure metals bend easily while atoms of a different size make alloys stronger and less malleable, gold alloys for rings, steel and stainless steel, and the properties of high-carbon and low-carbon steel. | 13 |
| How the uses of metals relate to their properties | How the properties of aluminium, copper and gold suit them to aircraft, electrical wiring, water pipes and electronic connectors, and the make-up and uses of the alloys magnalium and brass. | 8 |
| Carrying out an accurate titration | The pipette, burette and conical flask and how each is rinsed, removing air bubbles, suitable indicators and their colour changes, reaching the end point accurately, reading the burette, and concordant titres and the mean titre. | 15 |
| Percentage yield | Theoretical and actual yield, calculating a percentage yield, actual yield or theoretical yield, why a yield cannot exceed 100%, and how incomplete reactions, reversible reactions, practical losses and side reactions lower it. | 16 |
| Atom economy | What atom economy measures and how it is calculated from the balanced equation, how it differs from percentage yield, and worked atom economies for making calcium oxide, iron, copper, ammonia, hydrogen, magnesium chloride and oxygen. | 14 |
| The Haber process | The elements combined and the ammonia made, the symbol equation and what ⇌ means, where the nitrogen and hydrogen are obtained, why one pass is incomplete, and fertiliser use. | 8 |
| Fertilisers and ammonium salts | The nitrogen, phosphorus and potassium that fertilisers supply and why they must be soluble compounds, what NPK means, making ammonium nitrate by neutralising ammonia with nitric acid, why it is an effective fertiliser, and crystallising it from solution. | 14 |
| Preparing ammonium sulfate in the lab and in industry | Preparing ammonium sulfate in the laboratory from ammonia solution and dilute sulfuric acid by titration and crystallisation, its equation, and how and why the continuous, several-stage industrial process differs from the laboratory method. | 8 |
| Chemical cells and fuel cells | What a chemical cell is and why it stops producing a voltage, non-rechargeable and rechargeable cells, cells in series, and the hydrogen–oxygen fuel cell, its reactants, equation and water product, and why it needs no recharging and emits no carbon dioxide. | 13 |
| Evaluating fuel cells | The advantages and disadvantages of hydrogen–oxygen fuel cells, their use on spacecraft, the difficulty and danger of storing hydrogen, whether they are as clean as they seem, and comparing them with rechargeable batteries for cars and remote sites. | 9 |
How the guide is worked
Answering a question from memory stores it far better than reading the answer again. The guide runs that as a fixed procedure on one subtopic at a time, about twenty minutes a session.
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Step 1 · Closed book
Cover the answers. Work through one subtopic and write down what you can. Leave blanks where you have nothing.
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Step 2 · Open book
Go back to the top. Read each printed answer and write it out in full, including the ones you had right.
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Step 3 · Closed book again
Same questions, same order, from memory. The gap between pass one and pass three is the session result.
Read the full method, the return schedule and the research behind it.
Nearby topics
Edexcel GCSE Chemistry, Foundation tier Active Recall Guide
Every topic, not just this one. 1,651 questions with their answers.