Recycling Different Materials Flashcards

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What does recycling mean in chemistry and everyday life?

Recycling means collecting used materials and processing them so they can be made into new products.

Metals, glass, many plastics, and paper are often recycled.

Recycling saves raw materials and energy. It also reduces the amount of waste sent to landfill.

Scrap metal is collected, sorted, cleaned, melted, and then cast or rolled into new metal products.

Recycling only needs heating and melting. Making metal from ore also needs mining and high‑energy chemical processes.

When metal is melted and solidified, the metal atoms stay the same. So the properties stay almost the same.

Glass bottles are collected, sorted by colour, cleaned, crushed, melted, and shaped into new glass products.

They can be crushed into small pieces and used as aggregate for new concrete or for building roads.

Different plastics have different structures and melting points. If mixed, the recycled plastic can be weak or useless.

Thermosoftening plastics melt when heated, so they can be reshaped. Thermosetting plastics do not melt once they have set.

There are many types of plastic, and they can be hard to sort and clean. Some plastics do not melt cleanly when heated.