Why Select one or more O a. They are formed of molecules with a hydrophilic head

Question

Why Select one or more O a. They are formed of molecules with a hydrophilic head and a hydrophobic tail O b. The heads of the molecules forming a micelle are hydrophilic because they are polar molecules O c. In s spherical micelle, there exists a dry center, which can be used to carry other hydrophobic molecules O d. Formation of micelles relies on metallic bonds. Certainty O : OC-1 (Unsure: 67%) OC-3 (Quite sure: >80%) do micelles form? Check all correct answers Check The three crystalline forms of pure carbon are diamond, graphite, and Certainty O : OC-1 (Unsure: 67%) OC-3 (Quite sure: >80%) Check Carbon nanotubes cannot be classified as a form of fullerenes Select one O True O False Certainty O Check : OC-1 (Unsure: 67%) OC-3 (Quite sure: >80%) The three types of nanotubes are Give your answer as a list separated by commas, such as: "red, green, and blue Certainty O : OC-1 (Unsure: 67%) OC-3 (Quite sure: >80%) Check The chirality of a nanotube determines whether it conducts electricity like a metal or a semiconductor Select one O True O False

Explanation / Answer

Ans 1 :

They are formed of molecules with a hydrophilic head and a hydrophobic tail.

The heads of the molecules forming a micelle are hydrophilic because they are polar molecules.

C = 1

Ans 2 :

The three crystalline forms of pure carbon are diamond , graphite and fullerenes.

C = 1

Ans 3 :

Carbon nanotubes cannot be classified as a form of fullerenes : False

This is because the cylindrical fullerenes are referred to as carbon nanotubes.

C =1

Ans 4 :

The three types of nanotubes are : Single walled , double walled , and junction and crosslinking.

These nanotubes are basically the sheets (single or double) of carbon which are rolled into the form of tubes.

C = 1

Ans 5 : The chirality of nanotube determines whether it conducts electricity like metal or a semiconductor : false

It is the helicity of the nanotube that determines whether or not it is electricity conducting like a metal or semiconductor.

C = 1

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