2tonix

  Aldehydes What is the general formula for an aldehyde? The general formula for an aldehyde is R-CHO, where R is any alkyl or aryl group. How can you distinguish between aldehydes and ketones using a chemical test? Tollens' reagent can be used to distinguish between aldehydes and ketones. Aldehydes will react with Tollens' reagent to form a silver mirror, while ketones will not react. Physical Properties What is the boiling point of aldehydes compared to alkanes with the same molecular weight? Aldehydes have higher boiling points than alkanes with the same molecular weight due to the presence of the carbonyl group, which can form hydrogen bonds with other molecules. What is the solubility of aldehydes in water? Low-molecular-weight aldehydes are soluble in water due to their ability to form hydrogen bonds with water molecules. However, solubility decreases as the molecular weight of the aldehyde increases. Chemical Properties How do aldehydes react with nucleophiles? Aldehyde...

  Carbohydrates Which of the following is a monosaccharide? (a) Starch (b) Cellulose (c) Glucose (d) Sucrose What is the glycosidic bond? (a) The bond between two carbon atoms in a carbohydrate molecule (b) The bond between two nitrogen atoms in a protein molecule (c) The bond between two oxygen atoms in a nucleic acid molecule (d) The bond between a carbohydrate and a water molecule What is the difference between starch and cellulose? (a) Starch is a linear polymer of glucose, while cellulose is a branched polymer of glucose. (b) Starch is a soluble polymer of glucose, while cellulose is an insoluble polymer of glucose. (c) Starch is a reducing sugar, while cellulose is a non-reducing sugar. (d) Starch is found in plants, while cellulose is found in animals. What is the function of glycogen? (a) To provide energy for muscle contraction (b) To store energy in the liver and muscles (c) To build the cell walls of plants (d) To transport oxygen in the blood What is the role of enzymes...