These plastic trivia questions cover the material from four sides: what it is and how it is shaped, who invented which kind and when, the plastic bag, and what happens to plastic in the environment.
Read the full guide
The science and the history
What plastic is and how it is shaped asks about polymers, thermoplastics and thermosets, resin codes and molding. Inventors and dates runs from natural rubber in Mesoamerica to Parkes, Baekeland and Natta.
Bags and the sea
Plastic bags has the Swedish engineer behind the shopping bag, the patent year and a first state ban. Plastic in the environment explains nurdles, scrubbers and how long a foam cup or a fishing line lasts. Tap a choice to check it; the reason appears with the answer.
For Earth Day or a recycling week, play Plastic bags and Plastic in the environment and skip the chemistry.
Questions and answers
What is a good trivia question about plastic bags?
Try this one: who invented the modern lightweight shopping bag? It was the Swedish engineer Sten Gustaf Thulin, in the early 1960s, and his one-piece design was patented worldwide in 1965.
Who invented plastic?
Alexander Parkes invented what is considered the first man-made plastic in 1855, from cellulose. The first fully synthetic plastic was invented in New York in 1907 by Leo Baekeland, who also coined the term plastics.
What are some easy plastic trivia questions?
Which plastic is the most common for bags? Which process forces molten plastic into a mold under high pressure? What is the largest use of plastic? The answers are polyethylene, injection molding and packaging.
How were the answers checked?
Each was read on October 3, 2026 in the English Wikipedia article Plastic, Plastic pollution or Plastic bag, linked under the question. Makers' names and trade names are left out, and so are the articles' health sections.
Before recycling, plastic is usually sorted by polymer type and by what else?Answer: Color. Source: Wikipedia: Plastic
From what are bioplastics mostly made?Answer: Renewable plant materials such as cellulose and starch. Source: Wikipedia: Plastic
In blow molding, what is the heated plastic tube that is inflated inside the mold called?Answer: A parison. Source: Wikipedia: Plastic
In vulcanization, natural rubber is heated in the presence of which element?Answer: Sulfur. Source: Wikipedia: Plastic
Milk bottles, shampoo bottles and ice cream tubs are given as examples of containers made from which plastic?Answer: HDPE. Source: Wikipedia: Plastic
Most commodity plastics carry a number called an RIC. What do the letters stand for?Answer: Resin Identification Code. Source: Wikipedia: Plastic
Plastics are materials made up mainly of what?Answer: Polymers. Source: Wikipedia: Plastic
Plastikos, the Greek source of our term plastic, described a thing as what?Answer: Capable of being shaped or molded. Source: Wikipedia: Plastic
The polymers in most plastics are formed from chains of which atoms?Answer: Carbon. Source: Wikipedia: Plastic
What are plastics called when they are made in high volumes for packaging, food containers and household products?Answer: Commodity plastics. Source: Wikipedia: Plastic
What are the molecular groups that hang from the backbone of a polymer called?Answer: Side chains. Source: Wikipedia: Plastic
What happens to a thermoset if it is reheated?Answer: It decomposes instead of melting. Source: Wikipedia: Plastic
What is the defining characteristic of plastics, which lets them be molded, extruded or pressed into shape?Answer: Plasticity. Source: Wikipedia: Plastic
What is the largest use of plastic?Answer: Packaging. Source: Wikipedia: Plastic
Which are the most popular biodegradable plastics?Answer: Polylactic acids. Source: Wikipedia: Plastic
Which kind of plastic can melt and take shape only once?Answer: A thermoset. Source: Wikipedia: Plastic
Which kind of plastic does not change chemically when heated, so it can be molded again and again?Answer: A thermoplastic. Source: Wikipedia: Plastic
Which process makes plastic parts by forcing molten plastic into a mold cavity under high pressure?Answer: Injection molding. Source: Wikipedia: Plastic
Which small building blocks link up to make the long chain of a polymer?Answer: Monomers. Source: Wikipedia: Plastic
Why do polyurethanes have no resin code of their own?Answer: They cover many chemically different formulations. Source: Wikipedia: Plastic
Inventors and dates 18
Around 1600 BC, people in Mesoamerica used a natural plastic material for balls, bands and figurines. Which one?Answer: Natural rubber. Source: Wikipedia: Plastic
At which event of 1862 was the first man-made plastic unveiled, winning its inventor a bronze medal?Answer: The International Exhibition in London. Source: Wikipedia: Plastic
Casein plastics of the 1890s were made from the proteins of which food?Answer: Milk. Source: Wikipedia: Plastic
From which plant material was the first man-made plastic manufactured?Answer: Cellulose. Source: Wikipedia: Plastic
In 1897 a printer in Hanover was asked to develop an alternative to which classroom object, which led to a horn-like plastic?Answer: Blackboards. Source: Wikipedia: Plastic
In the Middle Ages, which treated material was used as windows for lanterns?Answer: Cattle horn. Source: Wikipedia: Plastic
In which country was polyethylene terephthalate, the plastic of drinks bottles, discovered in 1941?Answer: The United Kingdom. Source: Wikipedia: Plastic
In which decades did plastic recycling and biodegradable plastics begin to flourish?Answer: The 1980s and 1990s. Source: Wikipedia: Plastic
In which decades did the mass production of plastics begin?Answer: The 1940s and 1950s. Source: Wikipedia: Plastic
In which year did the researchers Reginald Gibson and Eric Fawcett discover polyethylene?Answer: 1933. Source: Wikipedia: Plastic
In which year was polyvinyl chloride first created?Answer: 1872. Source: Wikipedia: Plastic
What did Charles Goodyear discover in 1839, a way to harden natural rubber?Answer: Vulcanization. Source: Wikipedia: Plastic
Which Nobel laureate has been called the father of polymer chemistry?Answer: Hermann Staudinger. Source: Wikipedia: Plastic
Which of these is expanded polystyrene used for?Answer: Building insulation. Source: Wikipedia: Plastic
Who discovered polypropylene in 1954?Answer: Giulio Natta. Source: Wikipedia: Plastic
Who invented the first fully synthetic plastic in the world, in New York in 1907?Answer: Leo Baekeland. Source: Wikipedia: Plastic
Who invented what is considered the first man-made plastic, in 1855?Answer: Alexander Parkes. Source: Wikipedia: Plastic
With pigments added, the first man-made plastic could be made to resemble which costly material?Answer: Ivory. Source: Wikipedia: Plastic
Plastic bags 14
A bag stack patented in 1992 is called self-opening. What happens when a shopper pulls one bag off the rack?Answer: The next bag in the stack opens. Source: Wikipedia: Plastic bag
Bulk bags, also called jumbo bags or super sacks, handle loads between 500 kg and how much?Answer: 2,000 kg. Source: Wikipedia: Plastic bag
By what other name is a plastic bag known?Answer: A poly bag. Source: Wikipedia: Plastic bag
From about when did plastic bags become common for carrying groceries home across the developed world?Answer: The mid-1980s. Source: Wikipedia: Plastic bag
From the point of sale to its destination, a plastic bag is said to have a lifetime of how long?Answer: 12 minutes. Source: Wikipedia: Plastic bag
In September 2014, which state became the first in the United States to pass a law banning plastic bags?Answer: California. Source: Wikipedia: Plastic bag
In which country was the modern lightweight shopping bag developed, in the early 1960s?Answer: Sweden. Source: Wikipedia: Plastic bag
In which year was the one-piece plastic shopping bag patented worldwide?Answer: 1965. Source: Wikipedia: Plastic bag
On which date is International Plastic Bag Free Day celebrated?Answer: July 3. Source: Wikipedia: Plastic bag
The one-piece shopping bag was formed by folding, welding and die-cutting what?Answer: A flat tube of plastic. Source: Wikipedia: Plastic bag
Up to how long can a plastic bag that is not compostable take to decompose?Answer: 1,000 years. Source: Wikipedia: Plastic bag
What do gussets do for a plastic bag?Answer: They let it hold a higher volume. Source: Wikipedia: Plastic bag
Which plastic is the most common for making bags?Answer: Polyethylene. Source: Wikipedia: Plastic bag
Who invented the modern lightweight shopping bag?Answer: Sten Gustaf Thulin. Source: Wikipedia: Plastic bag
Plastic in the environment 13
Between 1950 and 2017 an estimated 9.2 billion metric tons of plastic were made. Since which year was more than half of it produced?Answer: 2004. Source: Wikipedia: Plastic
By one estimate, how long does a foam plastic cup take to degrade?Answer: 50 years. Source: Wikipedia: Plastic pollution
By one estimate, which of these takes longest to degrade?Answer: Fishing line, at 600 years. Source: Wikipedia: Plastic pollution
Microdebris are pieces of plastic between which two sizes?Answer: 2 mm and 5 mm. Source: Wikipedia: Plastic pollution
Plastic debris is sorted by size into micro debris, macro debris and which third class?Answer: Meso debris. Source: Wikipedia: Plastic pollution
Some researchers suggest that by 2050 the oceans could hold more plastic, by weight, than what?Answer: Fish. Source: Wikipedia: Plastic pollution
What are secondary plastics?Answer: Smaller pieces left when primary plastics break down. Source: Wikipedia: Plastic pollution
What are the microdebris that come from cleaning and cosmetic products also called?Answer: Scrubbers. Source: Wikipedia: Plastic pollution
What does marine plastic pollution create in the oceans?Answer: Garbage patches. Source: Wikipedia: Plastic
Which country hosted World Environment Day in 2018, when the theme was Beat Plastic Pollution?Answer: India. Source: Wikipedia: Plastic pollution
Which kind of plastic item is more likely to be found around remote islands?Answer: Fishing gear. Source: Wikipedia: Plastic pollution
Which small pieces of plastic, used to make new plastic items, often escape into the sea during production and transport?Answer: Nurdles. Source: Wikipedia: Plastic pollution
Why are most plastics slow to degrade in nature?Answer: Their chemical structure resists natural processes of breakdown. Source: Wikipedia: Plastic pollution