Polymers

A chain of repeating units (called monomers)

• monomer

• dimer

• replicate

• polymer

Define polymer

• circular molecule made with many repeating units

• short molecule made of a few repeating units

• long, chain-like molecule made of repeating units

• chain-like molecule that contains hydrogen and oxygen

What is the process to make long polymer (plastic) chains?

• Fractional Distillation

• Curing

• Fracking

• Polymerization

What kind of chemical bonds create polymers?

• ionic

• covalent

• hydrogen

• metallic

Polyvinyl chloride (PVC) is a polymer used to make water pipes and other products. Polymer molecules are made of groups of atoms that repeat many times in long chains, as shown in the formula.

Which circle, numbered starting from left to right, shows the repeating group of atoms that forms PVC?

Choose the correct answer.

• first circle

• • second circle

• third circle

• fourth circle

Tags

NGSS.MS-PS1-1

What is the structural feature of linear polymers?

• They have branched chains.

• They have cross-linked chains.

• They have straight chains.

• They form a network structure.

What property of polymers determines their melting point?

• Color

• Density

• Molecular weight

• Transparency

Tags

NGSS.MS-PS1-1

Which of the following polymers is known for its high tensile strength?

• Polyvinyl chloride (PVC)

• Polyethylene

• Nylon

• Polystyrene

Which of the following is NOT a property of thermoplastics?

• They can be recycled.

• They can be remolded and reshaped.

• They cannot be melted.

• They are used in making bottles and containers.

Tags

NGSS.MS-PS1-4

Which of the following is a characteristic feature of polystyrene?

• High flexibility

• Low thermal conductivity

• High electrical conductivity

• Solubility in water

Tags

NGSS.MS-PS3-3