Save
...
Paper 1
C2
Polymers and Properties of Materials
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Pav Bath
Visit profile
Cards (16)
What are plastics made of?
Plastics are made of long-chain molecules called
polymers
.
View source
How are polymers formed?
Polymers are formed when many small molecules called
monomers
join together.
View source
What is the process called when monomers join to form polymers?
This process is called
polymerisation
.
View source
What conditions are usually needed for polymerisation?
Polymerisation usually needs high pressure and a
catalyst
.
View source
What are the typical monomers of plastics?
The typical monomers of plastics are often
alkenes
.
View source
What determines the properties of polymers?
The properties of polymers are determined by the
forces
between the different chains.
View source
What type of bonds hold the atoms together in polymer chains?
Strong
covalent bonds
hold the atoms together in polymer chains.
View source
What happens if a plastic is made up of chains held together by weak intermolecular forces?
If the chains are held together by weak intermolecular forces, the plastic can be stretched easily and has a low
melting point
.
View source
What characterizes plastics with strong bonds between polymer chains?
Plastics with strong bonds have higher
melting points
, are
rigid
, and cannot be stretched.
View source
What is the relationship between the structure and bonding of materials and their properties?
Different types of materials have unique properties.
Properties are determined by the structures and bonding in the material.
Individual
atoms
do not possess these properties; it's the bonds that do.
View source
What type of bonds does chlorine form in ionic compounds like sodium chloride?
Chlorine forms strong
ionic bonds
in compounds like sodium chloride.
View source
Why does sodium chloride have a high melting and boiling point?
Sodium chloride has a high melting and boiling point due to the strong
electrostatic attraction
between the ions in its
lattice structure
.
View source
What type of substances does chlorine form, and what are their properties?
Chlorine forms simple molecular substances like
chloromethane
, which have strong
covalent bonds
but weak intermolecular forces, resulting in low melting and boiling points.
View source
How does the structure of polyvinyl chloride (PVC) contribute to its properties?
PVC is strong and rigid because the
intermolecular forces
between the
polymer chains
are relatively strong.
View source
Why do sodium chloride, chloromethane, and PVC have different properties despite containing chlorine?
They have different properties because of the
structure
and
bonding
of each substance, not because they contain
chlorine
atoms.
View source
What are the bulk properties of materials?
Bulk properties refer to the properties of a whole material.
They arise from the type and strength of the
bonds
in the material.
Individual
atoms
do not exhibit these properties.
View source