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How do you draw a lone pair on ChemSketch?

Click on the electron pair symbol. Your cursor will show the electron dots attached to the pointer. Each time you point at the molecule and click the left mouse button, a pair of electron dots will be drawn. When you are finished drawing electron dots, right click the mouse button.

How do you draw hydrogen bonds in ChemSketch?

Draw or read in your molecule in ChemSketch, and click on the 3D Optimization button. Click on Copy to 3D at the bottom of the window. In the 3D Viewer window, select the display option(s) desired. From the Edit menu, choose Copy.

How do you draw brackets in ChemDraw?

To enclose structures with brackets:

1. To display to Bracket toolbar, go to View>Other Toolbars>Bracket.
2. On the Bracket toolbar, select one of the double bracket tools.
3. To draw the brackets, click and drag across the structure you want to enclose.

How do you draw polymer repeat units?

When drawing one, you need to:

1. change the double bond in the monomer to a single bond in the repeat unit.
2. add a bond to each end of the repeat unit.
3. draw brackets around the repeating unit so that the brackets go through the middle of the bonds at the end.

What is cold drawing in polymers?

Cold drawing refers to the behavior of polymeric strips or fibers which deve- lop oriented necks upon stretching. It is appealing to view the cold-drawing process as the result of a loss of mechanical stability of the homogeneously deformed undrawn state.

What holds polymers together?

Polymers have very large molecules . The atoms in a polymer molecule are joined together by strong covalent bonds in long chains. There are variable numbers of atoms in the chains of a given polymer. One example of a polymer is poly(ethene).

What is the repeating unit of polystyrene?

Polystyrene has a chain where the substituent R is a phenyl group (C6H5), corresponding to a benzene ring minus one hydrogen: -[CH2-CH(C6H5)]n-, so the repeat unit is -[CH2-CH(C6H5)]-.

Can polymers be broken down into monomers?

Polymers are broken down into monomers via hydrolysis reactions, in which a bond is broken, or lysed, by addition of a water molecule.

How are monomers linked together?

The monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts. This type of reaction is dehydration synthesis, which means “to put together while losing water.”

How are monomers and polymers related?

Monomers are small molecules, mostly organic, that can join with other similar molecules to form very large molecules, or polymers. Polymers are a class of synthetic substances composed of multiples of simpler units called monomers. Polymers are chains with an unspecified number of monomeric units.

What monomers is used to synthesize proteins?

Complex carbohydrates are formed from monosaccharides, nucleic acids are formed from mononucleotides, and proteins are formed from amino acids. There is great diversity in the manner by which monomers can combine to form polymers. For example, glucose monomers are the constituents of starch, glycogen, and cellulose.