Ascientist discovers a new type of polymer. what must be true about this polymer? a. it contains carbon atoms arranged in a ring structure. b. it has double bonds between all the carbon atoms. c. it contains molecules of many different types. d. it is made of large molecules with repeating units.

This polymer must D. be made of large molecules with repeating units.

A polymer consists of long chains of smaller repeating units called monomers.

For example, polyethylene consists of long chains of ethylene (CH₂=CH₂) units joined together end to end.

The formula for polyethylene is -CH₂CH₂-(CH₂CH₂)ₙ-CH₂CH₂-, where n is usually a number between 500 and 10 000.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.