GCSE · Chemistry · AQA · Spec 8462

Reduce, reuse, recycle

You've finished with a glass bottle. Is the recycling bin always the best place for it? Make your call, then weigh the evidence.

Your call first

Is recycling always the best option?

The claim

Recycling is always the best way to reduce the use of limited resources.

Place each piece of evidence to load the balance. Mark the strong ones — they count double.

  1. Recycling turns used materials into new products, so fewer limited raw materials have to be extracted from the Earth.

    Evidence 1: does it support or challenge the claim?

  2. For badly contaminated material, the resources spent cleaning and processing it can be greater than the benefit gained.

    Evidence 2: does it support or challenge the claim?

  3. Waste sent to landfill instead releases methane, a greenhouse gas, from the landfill site.

    Evidence 3: does it support or challenge the claim?

  4. Sorting and separating waste for recycling uses energy itself. A life cycle analysis can show whether the carbon saved by recycling the extra material outweighs that energy.

    Evidence 4: does it support or challenge the claim?

  5. Reusing and repairing products can make resources go further and lower carbon emissions.

    Evidence 5: does it support or challenge the claim?

  6. Some products cannot be reused, so recycling them for a different use is the better choice.

    Evidence 6: does it support or challenge the claim?

  7. Some material that could be recycled in principle is not, because it is too dirty or mixed to recycle economically or practically, or because nobody will buy it.

    Evidence 7: does it support or challenge the claim?

Exam line: An evaluation weighs both sides and then says which way the balance tips, and why. 'Recycling is good' is only half an answer.

Why bother at all?

What does cutting our use of materials actually save?

Every new product starts with raw materials dug out of the Earth and processed using energy. Draw the arrows: each one means 'this leads to that'. Then compare your web with the lesson's.

  1. Using less, reusing and recycling materials
  2. Fewer limited raw materials extracted
  3. Less quarrying and mining
  4. Fewer environmental impacts
  5. Less energy from limited resources used
  6. Limited supplies last longer (outcome)
Add a link

No links yet.

Reuse or recycle?

Same product again, or something new?

Is each one being reused or recycled? Pick an item, then pick a box.

Still to sort

Reused (0)

The same product is used again for its job.

Where the line is: If the product is crushed, melted or reformed into something different, it has been recycled, not reused.

Recycled (0)

The material is processed into a different use.

Where the line is: If the product just gets used again as it is, that's reuse, even when it has been washed first.

5 of 5 still to sort.

Watch out: Crushing and melting glass bottles to make different glass products is recycling, not reuse. It's still glass, but the product has changed.

The order of preference

Where does recycling really rank?

Put these ways of dealing with materials into the order that waste policy prefers them.

1 · Most preferred5 · Last resort

  1. Recycle

  2. Landfill disposal

  3. Reuse

  4. Other recovery, such as energy recovery

  5. Prevent waste (use less)

Watch out: Recycling isn't at the top. Preventing waste and reusing both come before it.

Making recycling work

?

Reason it through

Why do plastic items carry identification codes and symbols?

Link 1 of 4

First link · your turn

Before recycling can work well, what has to happen to the materials?

2
Locked — reveal the link above first
3
Locked — reveal the link above first
4
Locked — reveal the link above first

Your turn to write it

Evaluate it yourself

Most of the empty bottles are returned undamaged and can be washed and refilled. A few come back chipped or broken and cannot be used again. The company could reuse bottles, recycle them, or send them to landfill.

A drinks company sells its drinks in glass bottles. Evaluate the options below for reducing the use of limited resources. [4 marks]

0 words · your answer stays on this page and is not sent anywhere.

Exam line: Use the information you're given, weigh the options against each other, and finish with a judgement that follows from what you've written.

WHAT YOU'VE LEARNED

A quick recap of today's lesson.

Three ways to use less of what the Earth can't replace, and how to judge between them.

What you need to know

  • Metals, glass, building materials, clay ceramics and most plastics are produced from limited raw materials.
  • Much of the energy for producing these materials comes from limited resources.
  • Obtaining raw materials by quarrying and mining causes environmental impacts.
  • Reuse means the same product is used again. Recycling means the material is processed into a different use.
  • Order of preference: prevent waste → reuse → recycle → other recovery (such as energy recovery) → landfill as the last resort.
  • Recycling is not automatically the best choice. Judge each case from the information given.

The big picture

Metals, glass, building materials, clay ceramics and most plastics are made from limited raw materials, and much of the energy used to produce them comes from limited resources. Using less, reusing and recycling all reduce the use of limited resources, energy sources and waste, and cut the environmental impacts of quarrying and mining. Waste policy puts the options in order: prevent waste, reuse, recycle, other recovery such as energy recovery, and landfill last. Recycling helps, but it is not automatically the best choice: contaminated or mixed material, and the energy used for sorting, can outweigh the benefit.

Key points

1Using less, reusing and recycling reduce the use of limited resources, the use of energy sources, waste and environmental impacts.
2Glass bottles can be reused. They can also be crushed and melted to make different glass products. Metals are recycled by melting and recasting or reforming them.
3Adding some scrap steel to iron from a blast furnace reduces the amount of iron that has to be extracted from iron ore.
4How much separation recycling needs depends on the material and the properties the final product needs. Plastics are hard to sort, so they carry identification codes and symbols.
5Recycling can cost more than it saves: cleaning badly contaminated material can outweigh the benefit, and sorting uses energy. Some recyclable material is never recycled because it is too dirty or mixed, or nobody will buy it.
6Durability affects reuse: strong plastic bags can be used again, while paper bags often tear after one use (though paper is biodegradable and plastic is not).

Worked example

Problem

A batch of scrap steel arrives for recycling. It is mixed with pieces of plastic and glass. Evaluate recycling this steel as a way of reducing the use of limited resources.

⚠ Watch out

Calling crushed and melted glass 'reused'. Reuse is the same product used again, like a refilled milk bottle; crushing and melting makes something different, so it's recycling. And don't write that recycling is always best: using less and reusing come first.

🧠

Memory hook

Less, Again, Different. Use LESS, use it AGAIN (reuse), then make it into something DIFFERENT (recycle). Recycling is third on the podium, not first.

✓

Check yourself

Cover the page and answer out loud: what's the difference between reusing and recycling? Where does recycling sit in the order of preference? Give two reasons why recycling isn't automatically the best choice.

Flashcards

(15)
Which materials are produced from limited raw materials?
Metals, glass, building materials, clay ceramics and most plastics. Much of the energy used to produce them also comes from limited resources.
What harm does getting raw materials out of the Earth cause?
Quarrying and mining cause environmental impacts.
What happens when you use less of a finite resource?
The remaining supply lasts longer.
Reuse vs recycle: what's the difference?
Reuse: the same product is used again. Recycle: the material is processed into a different use.
How are glass and metals recycled?
Glass bottles are crushed and melted to make different glass products. Metals are melted and recast or reformed into different products.
Scrap steel + blast-furnace iron: what's the point?
Less iron needs digging out as iron ore.
Waste options in order of preference?
Prevent waste, reuse, recycle, other recovery (such as energy recovery), then landfill as the last resort.
When is recycling the better choice than reuse?
When a product cannot be reused.
What decides how much separation recycling needs?
The material and the properties required of the final product.
Why do plastics carry identification codes and symbols?
Recycling needs materials separated by type, and plastics are hard to sort.
What does landfill release?
Methane, a greenhouse gas, from the landfill site.
How does durability affect reuse?
Strong plastic bags can be used again, but paper bags often tear after one use. Paper bags are biodegradable; plastic bags are not.
Why isn't recyclable material always recycled?
It may be too dirty or mixed to recycle economically or practically, or nobody will buy it. For badly contaminated material, cleaning and processing can cost more than the benefit.
What can a life cycle analysis show about recycling?
Whether the carbon saved by recycling the extra material outweighs the energy used for sorting and separating.
What do reusing and repairing products achieve?
They can make resources go further and lower carbon emissions.

Tap any card to flip it, or use Study as deck to go through them one at a time. In the full lesson these run as a spaced-repetition deck — you rate each card Hard, Good or Easy and the tricky ones keep coming back until they stick.

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