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Nature and properties of soils
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In agriculture, everything is mainly based on science. Every development and structure is composed of different cells and they all come together to create different reaction or output. Fertilizers use chemistry to determine the compounds needed to increase fertility of soil or crops. Chemistry helps check pH of soil and crops with the universal indicator and can help neutralise soil for the best growth of the plant. Waxes and chemical compounds like glycerine are widely used to package perishable fruits, not letting any moisture escape from the fruit. Chemistry is also applied in the heat and mass transfer in greenhouses, suspension systems in tractors and concentration in a chemical reactor.
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There are two basic types of properties that are associated with the matter that makes up the world. These chemical properties are known as physical properties and chemical properties. There are many physical properties of soil, for
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Urea is a fertilizer high in N content and is found in nature because it’s made of animal urine. This fertilizer contains a controlled reaction of ammonia gas(NH3) and carbon dioxide(CO2). The chemical formula for Urea is CO(NH2)2, composed with 46% N and with a 1,080g/L H2O solubility. The fertilizer can be distributed as a fluid throughout the soil due to its high solubility. Hydrolysis occurs several days after the fertilizer has contact with the plant. The plant can use the a small portion of the urea as N, ammonium (NH4+) and nitrate (NO3-). Lots of care should be put on the spots where Urea has been spread to minimize any N loss to the air, surface water, and groundwater. Any loss of N may cause loss of crop yield and quality. The use of Urea is also applied in power plants and diesel exhaust systems reducing emission of nitrous oxide (NOx)gases. Urea can also be used as a protein supplement given to ruminant animals such as
In an effort to classify what sort of things properties are several possibilities have been introduced. The favorite theory of D.M. Armstrong was that of properties as universals. Armstrong beliefs that universals are an ontologically basic component of the world. He compares them to the letters of the alphabet, rather than the words. Universals are thus a basic component of things. Armstrong also made several other claims about universals. First universals must be sparse. There isn’t a universal corresponding to every set. There are only as many universals as there are genuine similarities. Every universal must also be instantiated by something, either in the past, present or future.
To put it another way, properties are what make up an object, and substance is what the
My group, fertilizer group 3, is testing the variables of plant color and number of leaves. Fertilizer can affect that drastically! Those two variables are basically what determine a healthy plant. Fertilizer can help to boost the minerals in the soil and give the plant what it needs to survive and be healthy.
I have always been inspired by the workings of chemistry and mathematics. My studies of these subjects have developed my understanding and have made me pursue my interest in these two topics. I want to take up chemistry as it involves a large amount of mathematics which I value and understand to be challenging, yet very enjoyable, as there is always an alternative route to obtain the answer. Additionally, I am drawn to the course because it is a mixture of all these exacting subjects, forming a degree that is very demanding and stimulating. Chemists are constantly thinking of new ways to produce viable drugs containing different isomers to improve the pharmaceutical sector using mathematical equations. Chemistry is about innovation, applying information to new areas and how to do things better than they were before, the degree appeals to and fascinates me.
In 1803 this theory was finalised and stated that (1) all matter is made up of the smallest possible particles termed atoms, (2) atoms of a given element have unique characteristics and weight, and (3) three types of atoms exist: simple (elements), compound (simple molecules), and complex (complex molecules).
The history of chemistry dates back to the time of ancient history to now. Ancient civilizations used technologies that would eventually form the basis of the various branches of chemistry by 1000 BC. For example, they were extracting chemicals from plants to make medicines. The history of chemistry is intertwined with the history of thermodynamics. Chemistry is very important to our world today. Without it, we wouldn’t be near as advanced as we are. Let’s take scientists for example. The scientists at St. Jude children’s research hospital; everyday they are working to find the cure to various types of cancer by mixing different chemicals and making various compounds to somehow help all the children with the big C word today. Chemistry plays a big role in things we would never think of.
Though many people fail to realize it, chemistry is a subject essential to everyday life, due to the fact that it is the branch of science that deals with the identification of the substances of which matter is composed. But what we must understand is that everything in the universe is composed of matter, hence chemistry is necessary in learning more about the world and universe that we live in. There are many careers and fields affiliated with chemistry that people pursue to learn more about the composition of the universe, but for now, let us examine the logistics of three of these careers. These three careers involving chemistry are geochemistry, environmental chemistry, and chemical engineering.
From the unit of chemistry in grade ten science, the students have learned many things from different types of elements in the chart all the way to how each element impacts the daily life each student or even adult lives in. Some of the things I as a student have learned include how to draw the different elements in a bohr rutherford diagram, balancing chemical equations, types of chemical reactions, and even information about the different types of acids and bases. Although there were many other things in the unit, these four definately helped me learn about chemistry in a more in-depth way, as well as teaching me something very new since these were some things a few of the students had never done in the previous years. Learning this in the classroom has really opened my eyes to the world in which we live in today, many times I leave the house on a cold day and as I look upon the cold water becoming ice or even the snow falling down, I know how it is happening, why it is happening, and I can even picture the molecules solidifying as we had seen in class with many different diagrams.
Since the days of Aristotle, all substances have been classified into one of three physical states. A substance having a fixed volume and shape is a solid. A substance, which has a fixed volume but not a fixed shape, is a liquid; liquids assume the shape of their container but do not necessarily fill it. A substance having neither a fixed shape nor a fixed volume is a gas; gases assume both the shape and the volume of their container. The structures of gases, and their behavior, are simpler than the structures and behavior of the two condensed phases, the solids and the liquids
Due to an increasing global population, food demands have risen. Continual crop growth leaves soil lacking in nutrients, resulting in poor harvest. Solid and liquid fertilisers are ways to restore these vital nutrients; however both have different purposes and effects. To determine which fertiliser is more beneficial, an experimental investigation has been set up to test the effects of solid and liquid fertiliser on the growth of a tomato plant.
Fertilizers are essential to modern industrial agriculture. Two of the most important plant nutrients are nitrogen and phosphorus. Nitric acid, phosphoric acid, ...
There has been much excitement about the latest science news in which a remote controlled airplane was flown using seawater fuel. The U.S. Navy created the fuel by taking carbon dioxide and hydrogen from seawater and combing them to create an organic compound called a hydrocarbon, which can be used for energy. I believe this is a really an amazing discovery since the earth has a lot of seawater to use as fuel. The oil, gas and coal we currently use as fuel will not last forever. The possible use of seawater as future source of fuel is just one of many applications of organic compounds, compounds which contain carbon molecules. Carbon is a unique element because it has the ability to form many compounds with itself and with other nonmetal elements like oxygen, hydrogen, nitrogen, sulfur and phosphorous. Carbon has four electrons on its outer shell, which leaves four electrons available to create covalent bonds with other carbon molecules and other various elements. Carbon’s unique properties include forming single, double and triple bonds which can combine with other atoms, forming chains which can combine with other elements and forming isomers, which are molecules that have similar composition as the original molecule but a different arrangement of its atoms. Organic compounds, which have been found naturally or have been made synthetically by chemists, make our life much easier. Some of the many applications of organic chemistry are in medicine, energy sources and industry.
To understand why is agriculture important in the world of today, then first of all we must know what agriculture is? Agriculture is the basic material production of society, the use of land for agriculture and livestock, mining plants and animals as raw materials and labor to produce mainly food and some raw materials for industry. Agriculture is a major industry, covering many disciplines: planting, breeding and processing of agricultural products; in the broadest sense, also including forestry and fisheries. Agriculture is an important economic sector in the economy of many countries, especially in the past century , when the industry has not yet developed. Since the dawn of history, agriculture has been one of the importance means of producing
For centuries, many scientists and researchers have pondered on the idea of combining two or more substances together to create something new. These explorations have led to the idea of what kind of reactions would occur when diverse elements are combined. This is a concept known as chemistry, a part of science that corresponds with how matter is created from different properties and the process it goes through to create a new substance. Chemistry is a scientific concept that is used in everyday life and is a crucial part in the development of new technology and substances that allow today’s quality of life. The use of chemistry branches off into many different routes, including medical related fields, agriculture, and even in weapons of