13.4Q) Polymers

Covalent bonding is chemical bonding from...?

• ...the attraction of positive metal ions and delocalized electrons.

• ...sharing of electron pairs between atoms.

• ...the transfer of electrons between atoms.

• ...the attraction between electronegative atoms and lone pairs.

Tags

NGSS.HS-PS1-1

Covalent bonding gets stronger if...

• ...there are more delocalized electrons.

• ...there are more shared electrons.

• ...the size of the atoms get bigger.

• ...the mass of the atoms get bigger.

Covalent bonds require...

• ...high energy to break.

• ...moderate energy to break.

• ...low energy to break.

Tags

NGSS.HS-PS1-4

Van der Waals forces for small molecules require...

• ...high energy to break.

• ...moderate energy to break.

• ...low energy to break.

Van der Waals forces for large molecules require...

• ...high energy to break.

• ...moderate energy to break.

• ...low energy to break.

Which mechanical properties have high values in most Polymers?

• Viscoelasticity

• Grain structure

• Malleability

• Density Gradient

• Tear resistance

Match the following:

Groups:

(a) Macroscopic Structure

,

(b) Microscopic Structure

,

(c) Atomic/Molecular Structure

,

(d) Subatomic Structure

• Non-metal elements

• Hybridization

• Van der Waals forces

• Degree of polymerization

• Monomers

• Chain conformation

• Morphology

• Crystallinity

• Mechanical Properties

• Molecular weight

• Tear resistance

Match the following

• Mechanical Properties

• Arrangement and ordering of polymer chains.

• Molecular Weight Distribution

• Physical behavior of polymers at macroscopic scale.

• Morphology

• The statistical distribution of chain lengths in a polymer sample.

• Crystallinity

• The number of monomers incorporated into a single polymer chain, which is related to the molecular weight and physical properties of the polymer

• Degree of Polymerization

• The ordered, three-dimensional arrangement of polymer chains, which can coexist with amorphous regions and impact the mechanical, thermal, and optical properties of the polymer

Tags

NGSS.HS-PS2-6

Match

• Hybridization

• The number of monomers incorporated into a single polymer chain, which is related to the molecular weight and physical properties of the polymer

• Monomers

• The mixing of atomic orbitals in carbon atoms, resulting in different bonding configurations (sp, sp2, sp3) that influence the properties of carbon-based materials

• Chain conformation

• The small, repeating units that are chemically bonded together to form the polymer chains

• Degree of polymerization

• The spatial arrangement of the polymer chain, which can be influenced by factors such as the monomer structure and intermolecular interactions

Tags

NGSS.HS-LS1-6