Y QUESTIONS
1. Define chemistry.
2. How is chemistry useful in agriculture?
3. How does chemistry help us in the
preservation of food?
4. Name a few consumer products made by
chemists. How are these products useful
to us?
Answers
Answer:
the scientific study of the structure of substances and what happens to them in different conditions or when mixed with each other.
2.Chemical materials developed to assist in the production of food, feed, and fiber include scores of herbicides, insecticides, fungicides, and other pesticides, plant growth regulators, fertilizers, and animal feed supplements.
3.Chemical preservation entails adding chemical compounds to the product. Physical preservation entails processes such as refrigeration or drying. Preservative food additives reduce the risk of foodborne infections, decrease microbial spoilage, and preserve fresh attributes and nutritional quality.
4.Rayon,terylene and nylon are some products made by chemist
Answer:
2. Agricultural chemistry is the study of chemistry, especially organic chemistry and biochemistry, as they relate to agriculture—agricultural production, the processing of raw products into foods and beverages, and environmental monitoring and remediation. These studies emphasize the relationships between plants, animals and bacteria and their environment. As a branch of agricultural science, agricultural chemistry studies the chemical compositions and reactions involved in the production, protection, and use of crops and livestock. Its basic science aspects embrace, in addition to test-tube chemistry, all the life processes through which humans obtain food and fiber for themselves and feed for their animals. Its applied science and technology aspects are directed toward control of those processes to increase yields, improve quality, and reduce costs. One important branch of it, chemurgy, is concerned chiefly with utilization of agricultural products as chemical raw materials.
1. Define chemistry.
A. The branch of science which deals with study of materials (substances), especially about their composition, methods of preparation, properties and their reactions with other substances is called chemistry.
2. How is chemistry useful in agriculture?
A. Chemistry has helped agriculture in the following ways:
i) It helped in the production of artificial fertilizers which increase food production.
ii) It helped in the production of better seeds.
iii) It helped in producing chemicals which kill insects (insecticides), fungi (fungicides) and unwanted herbs (herbicides).
3. How does chemistry helps us in the preservation of forests?
A. Due to fast dwindling forest reserves, the wood is being replaced by plastic and cotton is replaced by man made fibres such as rayon, nylon and terylene. Thus, chemistry helps us in conservation of forest wealth.
4. Name a few consumer products made by chemists. How are these products useful to us?
A. Plastic, rayon, nylon and terylene are a few consumer products made by chemists. These products help in conservation of forest wealth thus maintaining the balance of the eco-system.
5. How does chemistry help in the development of space research and electronics?
A. The present day space technology is the direct result of production of better and more powerful fuels which helped us to launch space satellites. Research in chemistry helped in making diodes which are used to make electrical circuits in radios, televisions, computers, calculators etc.