Courses

▼

Pages

▼
Thursday, May 30, 2019

Hello again!

›
Hello everyone! I've been away for a long time and I am glad to say I've graduated! I will be pursuing engineering soon. In the me...
Tuesday, May 31, 2016

5.21 Understand that condensation polymerisation produces a small molecule, such as water, as well as the polymer.

›
When the two monomers come together, one or more atoms is/are lost. These join together to make a small molecule (i.e. H₂O, CH₃OH (methanol)...

5.20 Understand that some polymers, such as nylon, form by a different process called condensation polymerisation

›
Condensation polymerisation is a situation in which a polymer is formed, along with a small molecule such as H₂O, HCl or CH₃OH (methanol).  ...

5.19 Explain that addition polymers are hard to dispose of as their inertness means that they do not easily biodegrade

›
Addition polymers are unreactive because they are saturated , which means they don't biodegrade easily . Solutions used today include:...

5.18 Describe some uses for polymers, including poly(ethene), poly(propene) and poly(chloroethene)

›
Poly(ethene) plastic bags light carrier bags plastic bottles poly(propene) crates ropes thermal undergarments poly(chloroeth...

5.17 Deduce the structure of a monomer from the repeat unit of an addition polymer

›
In the simplest terms possible: take away the two 'floating' / empty bonds at the sides and make a carbon carbon double bond between...

5.16 Draw the repeat unit of addition polymers, including poly(ethene), poly(propene) and poly(chloroethene)

›
Repeat units must be drawn: within large brackets with two bonds sticking out  of the brackets an n at the end, representing the number...