Multiple choice

Which of the following polymers are prepared from the second most abundant substance in the Earth's crust?

  1. Silica

  2. Silicon

  3. Silicones

  4. Silicon dioxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Silicon is the second most abundant element in Earth's crust after oxygen and the eighth most abundant in the universe. Silicones are polymers that include silicon together with carbon, hydrogen, oxygen and sometimes other elements. Some common forms include silicone oil, silicone grease, silicone rubber, silicone resin and silicone caulk. Silicones have excellent resistance to oxygen, ozone and ultraviolet light. This property has led to widespread use of silicones in the construction industry and the automotive industry.

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