What this topic covers
Topic C6: Global challenges has 2 subtopics:
- Improving processes and products
- Interpreting and interacting with earth systems
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GCSE OCR Higher Combined Science Chemistry · Topic 6 of 6
Topic C6: Global challenges – GCSE OCR Higher Combined Science Chemistry revision notes
Choose a subtopic. Topic C6: Global challenges covers Improving processes and products and Interpreting and interacting with earth systems in GCSE OCR Higher Combined Science Chemistry. 43 lessons in 2 subtopics.
Revise Topic C6: Global challenges for GCSE OCR Higher Combined Science Chemistry, including Improving processes and products. 43 lessons across 2 subtopics.
43
Lessons
2
Subtopics
Topic C6: Global challenges lessons by subtopic
43 lessons, grouped by subtopic.
Improving processes and products
- The Four Stages of Life Cycle Assessment
- Challenges and Limitations of Life Cycle Assessment
- Comparing Shopping Bags: A Practical LCA
- Earth's Resources and Human Needs
- Data Analysis and Sustainable Development
- Understanding alkanes in crude oil
- What is crude oil and where does it come from?
- Separating Crude Oil by Fractional Distillation
- From Crude Oil to Modern Life - Fuels and Petrochemicals
- How hydrocarbon size affects properties
- Introduction to Cracking and Its Methods
- Uses and Importance of Cracking Products
- What is Potable Water and How Do We Make It?
- Water Treatment for Different Sources
- The Three Rs: Reduce, Reuse, Recycle
- Recycling in Practice: Glass and Metals
- Evaluating Resource Reduction Strategies
- Physical Treatment of Waste Water
- Biological Treatment of Waste Water
- Why We Need New Methods to Extract Metals
- Processing and Evaluating Alternative Metal Extraction Methods
Interpreting and interacting with earth systems
- Fuel Composition and Combustion Products
- Atmospheric Pollutants from Fuel Combustion
- What are greenhouse gases and why are they important?
- How does the greenhouse effect work?
- The composition of today's atmosphere
- The stability of atmospheric composition
- Earth's Resources and Human Needs
- Data Analysis and Sustainable Development
- Human Activities That Increase Greenhouse Gases
- Evaluating Climate Change Evidence and Scientific Communication
- Toxic and Respiratory Pollutants
- Particulate Matter and Global Dimming
- How Earth's Early Atmosphere Formed
- Changes in Early Atmospheric Composition
- Understanding Global Climate Change
- Scale and Implications of Climate Change
- How Photosynthesis Increased Atmospheric Oxygen
- How Earth's Atmosphere Changed Over Time
- How Photosynthesis Reduced Carbon Dioxide
- Formation of Carbon-Rich Deposits
- Understanding Carbon Footprints
- Reducing Carbon Footprints
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Frequently asked questions
What is Topic C6: Global challenges?
Topic C6: Global challenges covers Improving processes and products and Interpreting and interacting with earth systems in GCSE OCR Higher Combined Science Chemistry. 43 lessons in 2 subtopics.
What is the equation for photosynthesis?
The balanced equation for photosynthesis is 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂. The How Photosynthesis Increased Atmospheric Oxygen notes cover this in full.
How do you calculate percentage change?
Percentage change = (new value - old value) ÷ old value × 100. The Data Analysis and Sustainable Development notes cover this in full.
How old is the Earth?
The Earth is about 4.6 billion years old. The How Earth's Early Atmosphere Formed notes cover this in full.
What is the word equation for photosynthesis?
The word equation for photosynthesis is carbon dioxide + water → glucose + oxygen, in the presence of light and chlorophyll. The How Photosynthesis Reduced Carbon Dioxide notes cover this in full.
What are the three Rs in chemistry?
The three Rs are reduce, reuse and recycle, and the hierarchy matters: reduce first, then reuse, then recycle. The Evaluating Resource Reduction Strategies notes cover this in full.
What is a carbon footprint?
A carbon footprint is the total amount of greenhouse gases emitted over the full life cycle of a product, service or event. The Understanding Carbon Footprints notes cover this in full.
What is crude oil?
Crude oil is a finite fossil fuel found in rocks, formed from the remains of ancient biomass, mainly plankton, buried in mud millions of years ago. The What is crude oil and where does it come from? notes cover this in full.
What is LPG?
LPG, or liquefied petroleum gas, is a crude oil fraction containing short-chain hydrocarbons. The From Crude Oil to Modern Life - Fuels and Petrochemicals notes cover this in full.