Why is plastic used for bottles?
Show answer & explanation
Answer: Plastic is lightweight, shatter-resistant, and easy to mold into shapes
Plastic keeps liquids fresher than glass or metal — Wrong. Plastic is permeable to some gases over time (carbonation can escape from soda, oxygen can enter). It's used because it's lightweight, durable, shatterproof, cheap, and easily moldable—not superior preservation. Glass actually preserves better but is heavier and breakable.
Plastic is the cheapest material ever made — Wrong. Plastic is inexpensive, but it's not the cheapest material ever, and cost is only one factor. Bottles are made of plastic mainly because it's lightweight, shatter-resistant, and easy to mold into shapes, which lowers shipping costs and improves safety.
Plastic is lightweight, shatter-resistant, and easy to mold into shapes ✓ — Correct! Plastic (especially PET and HDPE) is ideal for bottles because it's lightweight (reducing shipping costs), durable and shatter-resistant (safer than glass), chemically inert (doesn't react with most liquids), waterproof, easily molded into any shape, and inexpensive to produce. These combined properties make plastic superior to glass or metal for many beverage applications.
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