Molecules of most detergents and soaps are long chain hydrocarbon molecules with an ionic group at one end, usually carrying a negative charge, thus making it an anion.…
Disinfection can be carried out by either thermal or chemical processes. Thermal disinfection is preferred whenever possible. It is generally more reliable than chemical processes, leaves no residues, is more easily controlled and is non-toxic.…
8. Surfactants are wetting agents that lower the surface tension of a liquid, allowing easier spreading, and lower the interfacial tension between two liquids. Surfactants improve water's ability to wet things, spread over surfaces, and seep into dirty clothes fibres. One end of their molecule is attracted to water, while the other end is attracted to dirt and grease. So the surfactant molecules help water to get a hold of grease, break it up, and wash it away. Soaps and detergents are both emulsifying agents and…
Agriculture was first started around the year 8,000 B.C.E. in Mesopotamia. There the plants grew along with food so humans could eat them. These first parts of farming faced many challenges with insects and pests eating away their crops. During the era of 1000 B.C.E. the Chinese began experimenting with elements such as mercury and other compounds to contain the insects. Other civilizations would use chemicals to contain pests. The usage of chemicals has occupied agriculture, and even more recently in the 1940’s inorganic substances composed of various elements were heavily used to contain the insects affecting the crops. The growth of many synthetic pesticides occurred during this time, the most common one was DDT. DDT was used the most…
Detergents are made up of things called surfactants. They are substances that lower the surface tension of water, allowing the dirt or stain to be removed from the clothing. Oxidizing agents are also in detergents, they act as bleaches. The last ingredient is enzymes. They speed up the chemical reactions to get the stains out quicker.…
They say that the pesticides ward off insects and bugs that would otherwise harm crops in the agricultural industry. Farmers that use pesticides claim that the prices of produce and other food products have lowered. For instance, without pesticides, there would be more crops lost to pests, which results in smaller harvests, and farmers would have to raise the price of their produce to accommodate their losses. But, the benefits of pesticides do not outweigh the disadvantages. As stated before, pesticides pose a threat to the environment, to pollinators, and to all organisms that ingest it. According to flowpsychology.com, experts say that insects exposed to the repellents can build up resistance over time, which makes the pesticides ineffective. Even though others say that pesticides help us, it will aid us more to ban…
Pesticides increase food production, decrease cost of food and the consumers get high quality food without insect damages.…
Pesticides are substances used for destroying organisms that are harmful to crops. There are many different forms of pesticides, but whichever form it is they harm, and kill Bumble bees. Bumble Bees pollinate about 15 percent of our food, and are valued at 3 billion dollars (Adam Federman). Bees are extremely important pollinators that we need, but yet we are killing them off indirectly with the pesticides we use on crops.…
I wonder what makes detergents to clean really sticky stains off from the with clothes.…
The Article: Plants 'Thrive' Next To Friendly Neighbors And Trees 'Gasp' For Water? Interesting! By “DOGO News” is about plants being able to talk to each other and grow next to each other because they want to. If you have ever noticed that certain plants seem to thrive next to each other, it may not be random, but because they want to be next to each other. At least that's what Monica Gagliano, thinks. She thinks that plants use some kind of sound indicating to talk with each other and depending on if it is good or bad it may allow the weaker plant to live or die. What's even more remarkable is that the scientist believes the talking can happen at the germination stage. She showed with some chili pepper, basil and fennel plants. She began by planting the chili seeds in isolated dishes next to fennel plants. Not many germinated. Then she conducted the same experiment next to some basil plants. Sure enough, the chili peppers not only germinated rapidly, but also, thrived. , Monica thinks that provided with this data, farmers may be able to use sound to encourage or discourage the growth of certain plants, helping to reduce their dependence on fertilizers and pesticides.…
The increase in desire for perfect produce, drives the need for pesticides today. Much debate of the effects of chemicals used on commercial crops and overall long term effects on humans is an increasing concern. With the increase in advertising of organic produce, many standards of farming have been criticized. Many are claiming a large increase in risk to humans for consuming commercially grown produce, because of the chemicals used to manage such a large volume of crops. There have been many debates of the actual risk of pesticide consumption. With advancing technology and farm equipment, many types of chemical sprays and powders have been used. The actual effect of these pesticides and long term exposure can be harmful to human health.…
The first is that the soap lessens the surface tension of the water so that it wets what needs to be cleaned in a more efficient manner.5 The second involves the molecular structure of the soap. Soaps have a hydrophilic (water-loving) end, the carboxylic acid region, and a hydrophobic (water-fearing) region, the fatty acid chain.1 This causes the soap molecules work like a bar magnet. The water is attracted to the hydrophilic end and the oil is attracted to the hydrophobic end since it is nonpolar. The oil particles get broken apart and washed away.5 Detergents also have a hydrophilic and hydrophobic end,1 so they work in a similar…
NEEM TREE LEAVES AS INSECT REPELLANT An Investigatory Project ABSTRACT This investigatory project deals with the processing of Neem Tree Leaves (Azadiracha Indica) and utilizing them as insect repellant. Expert analysis showed that Neem tree leaves are good and tested as insect repellant.…
The application of large number of pesticides are used in modern agriculture for control various insect pest population. The varieties and consumption of pesticides have been increasing as increased human population and crop production therefore misuses of pesticides become more and more serious problem as environmental point of view (Sitaramaraju et al. 2014). The increasing amount of crop productivity is not achieved without risk of human health and environment. The repeated application of pesticides may reaches in soil activity creates imbalance of soil which kills the pests and destroy the micro-organisms which are required for soil fertility and productivity (Madakka et al. 2010).…
To cease all these through a necessary and effective pest management and disease control schema must be utilized. Using chemical pesticide would be a usual resort though as it brings forth more serious environmental and human hazards from its residue and its component’s biological risks, it should rather be not the first or only choice.…