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satela [25.4K]
3 years ago
9

Select all the correct answers. Which substances are made up of polymers? DNA a glass bottle ice crystals the proteins in hair r

ubber car tires
Chemistry
1 answer:
____ [38]3 years ago
4 0

Answer:

DNA, the proteins in hair, rubber car tires.  

Step-by-step explanation:

<em>Polymers</em> are large molecules consisting of long chains of small repeating units.

DNA is a natural polymer that consists of hundreds of millions of repeating units called <em>nucleotides</em><em>.</em>

Hair protein consists of long chains of <em>amino acid</em> repeating units.

The rubber in car tires is a mixture of natural and synthetic rubber. Natural rubber consists of long chains of <em>isoprene repeating units</em>. In one type of synthetic rubber, the repeating units are <em>butadiene and styrene molecules</em>.

The <em>glass in a bottle</em> is not an organic polymer. However, some chemists consider it to be a highly cross-linked inorganic polymer of SiO₂.

<em>Ice crystals</em> are not even inorganic polymers, because the water molecules are held together only by hydrogen bonds, not covalent bonds.

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