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ScotlandChemistry

Area 3: Chemistry in Society

8 dot points across 8 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How do chemists test for substances and monitor the environment?

Chemical analysis: general practical techniques, gas tests and flame tests, paper chromatography, and the use of analysis to monitor the environment.
An SQA National 5 Chemistry answer on chemical analysis, covering general practical techniques, the standard gas tests for hydrogen, oxygen and carbon dioxide, flame tests for metal ions, paper chromatography, and the use of analysis to monitor the environment.
11 min answer →

How do the key areas of Chemistry in Society apply chemistry to materials, industry and analysis?

Overview of Area 3 Chemistry in Society: how metals, electrochemical cells, metal extraction, plastics, fertilisers, nuclear chemistry and chemical analysis connect.
An SQA National 5 Chemistry overview of Area 3 Chemistry in Society, linking metals and redox, electrochemical cells, metal extraction, plastics, fertilisers, nuclear chemistry and chemical analysis into the applied chemistry of materials, industry and analysis.
9 min answer →

How can a chemical reaction produce electricity?

Electrochemical cells: how two different metals in an electrolyte produce a voltage, the role of the ion bridge, and using the electrochemical series to predict the direction of electron flow.
An SQA National 5 Chemistry answer on electrochemical cells, covering how two different metals in an electrolyte produce a voltage, the role of the ion bridge, the direction of electron flow, and using the electrochemical series to predict and explain the cell.
11 min answer →

How does chemistry help feed a growing population, and at what cost?

Fertilisers: the essential elements nitrogen, phosphorus and potassium, the Haber process for ammonia, the Ostwald process for nitric acid, nitrogen fixation, and environmental problems such as eutrophication.
An SQA National 5 Chemistry answer on fertilisers, covering the essential elements nitrogen, phosphorus and potassium, the Haber process for making ammonia, the Ostwald process for nitric acid, nitrogen fixation, and the environmental problem of eutrophication.
11 min answer →

How do we get a metal out of its ore, and why does the method depend on reactivity?

Extraction of metals: ores, how the method of extraction depends on the reactivity series, reduction by heat, reduction by carbon or carbon monoxide, and electrolysis for very reactive metals.
An SQA National 5 Chemistry answer on the extraction of metals from ores, covering how the method depends on the reactivity series, extraction by heat alone, reduction by carbon or carbon monoxide, and electrolysis for the most reactive metals.
11 min answer →

How do metals react, and how do we put them in order of reactivity?

Metals: properties and uses, the reactivity series, reactions with oxygen, water and acids, displacement reactions, and oxidation and reduction with ion-electron equations.
An SQA National 5 Chemistry answer on metals, covering their properties and uses, the reactivity series, reactions with oxygen, water and dilute acids, displacement reactions, and oxidation and reduction with ion-electron equations.
12 min answer →

What is nuclear radiation, and how do we describe how fast a sample decays?

Nuclear chemistry: alpha, beta and gamma radiation and their properties, radioactive decay as a random process, half-life and half-life calculations, and the uses and dangers of radiation.
An SQA National 5 Chemistry answer on nuclear chemistry, covering alpha, beta and gamma radiation and their penetrating power, radioactive decay as a random process, half-life and half-life calculations, and the uses and dangers of nuclear radiation.
11 min answer →

How are plastics made from small molecules, and what problems do they cause?

Plastics: synthetic materials made by addition polymerisation, monomers and polymers, the repeating unit, uses of common plastics, and the problems of disposal.
An SQA National 5 Chemistry answer on plastics, covering synthetic materials, addition polymerisation, monomers and polymers, the repeating unit, the uses of common plastics, and the problems of plastic disposal.
10 min answer →