As you view the graphics, the idea is to develop the concept of polarity in a visual manner. The more areas of red and blue that you see, the more polar is the compound and the functional group in the compound. Look at the amide, and acid. The more areas of gray and lighter shades of red and blue, the more non-polar properties are being depicted. Look at the amine, ether, and alkane.
Delicacy. Although silk is valued for its delicacy, that same delicacy is considered a disadvantage of the fabric. Silk fades easily in direct sunlight, so a new garment dried outside can look old and worn. The fabric has a tendency to develop a yellow color over time and is particularly prone to perspiration stains.ilk is generally used for clothing such as blouses, dresses and ties, but it can also be used to make sheets and curtains. It has a fine, elegant and delicate appearance, but as a fabric, it has several disadvantages.
Cleaning Silk Upholstery. Silk is a lustrous fiber with high strength and good elasticity. It tends to shed dirt and resist wrinkles. Silk dyes and prints well and is usually found in bright rich colors. It is absorbent but dries quickly. Silk becomes weaker when wet and is easily yellowed and damaged by age, sunlight, and perspiration. Silk yellows if exposed to high temperatures and strong soaps. It is also harmed by alkalis and oxidizing agents (bleaches). Silk fabrics also tend to waterspot if wet cleaned incorrectly. Some brightly colored dyes used on silk are prone to bleeding. Insects can attack silk. In some constructions, silk fabrics have low abrasion resistance. The following tech help is on dry cleaning silk upholstery. Testing for bleeding still needs to be done with dry cleaning chemicals. To avoid damage, keep temperatures below 330Â°F.