Answers For The Final Exam

f) Sulfur trioxide changing into sulfuric acid in the atmosphere is a chemical property because it shows what is happening to the sulfur trioxide as it is reacting with the water in the atmosphere. This is is the behaviour of sulfur trioxide in a chemical change.

Weathering is the when rocks break down physically or chemically into smaller particles called sediments. Physical weathering is the breakdown of rocks and minerals without changing the chemical composition. Examples of physical weathering include frost wedging, biological activity/root weathering, mining/burrowing, exfoliation, and abrasion. Chemical weathering is the breakdown of rocks into smaller pieces by changing the chemical composition of the sediments. Examples of chemical weathering include oxidation, hydration, carbonic acid reacting with calcite to form caves, and biosphere (plant acids). Erosion is taking the material that has been weathered and is ready to be moved or eroded, and transports those loose sediments or rocks that

Soil is the basis for the natural ecosystems and a living thing, it sustains life on Earth and works as a natural recycling facility with nutrients to the plants. However, many people do not know about the good benefits that soil gives to our lives and how humans hurt the conditions of soil with chemicals. Soil is often times mistreated due to the misconception of soil as dirt. Nevertheless, Professor Asmeret Berhe highlighted during the lecture, Soil, that soil is a place of full of life that supports living thing. The living organism depends on the conditions of soil because soil delivers nutrients to plants. For instance, improving the conditions of the soil increases the harvest of crops. Unhealthy soil will not be able to do its job as a natural recycling facility, and not be able to give a good amount of nutrients to plants to abundantly grow. Therefore, conditions of soil are very important in agriculture. Furthermore, having organic soils can conserve the amount of water used for irrigation. Soil is main supply of water to all land and plants because it holds the water for organisms. Organic soil can hold few amounts of water for a long time so it helps farmers to reduce the agricultural water consumption. Soil is very important to out lives than what we imagine and think. The global awareness of soil preservation is less significant to people than other conservation efforts like reducing the amount of plastic used, but soil preservation is very significant to our earth system. Therefore, it is very important for humans to help the Earth healthy sustain life by stop mistreating soil as dirt and treating it as a living thing that holds full of

In our physical world, there are a multitude of phenomenon that occur daily that we experience that often go unnoticed. It contains a vast array of conceptual applications and the equations applied to them in order to better explain and calculate the phenomenon involved. In a normal occurrence an individual can explain and calculate certain aspects of movement and processes that are also involved with it. When dealing with the transferring of heat and various process related to heat, the terms convection, conduction and radiation are frequently discussed thoroughly. The overall field of thermodynamics involves the study of thermal processes in physical systems. Some terms involved with these particular concepts include: closed system, empirical law, free energy, joule’s law, specific, temperature, and thermodynamics. The general defined term of convection is “the heat transfer by mass motion of a fluid such as air or water when the heated fluid is caused to move away from the source of heat, carrying energy with it” (Georgia State University). “In the world of physics, the term conduction is usually defined as a form of heat transfer by the way of molecular tension inside an object or material that does not show any individual motion in its entirety” (Georgia State University). Radiation by means of physics related terms is defined as “the emission or transmission of energy in the form of waves or particles through a

Mechanical weathering is when physical procedures naturally breakdown rocks into reduced pieces. Chemical weathering changes the materials that are part of a rock into new resources. Examples of chemical weathering are water, acids, and oxidation. Water is important in chemical weathering because, most substances dissolve in water and acids are also essential since they increase the rate of chemical weathering even more. Lastly, oxidation which is when an addition of oxygen to a material is applied it creates an oxide. Which is a

Enthalpy (H)- The sum of the internal energy and the pressure – volume product of a system H= E + PV.

Chemical and physical properties of substances are due to the structure and arrangement of atoms, ions or molecules and how these interact with each other

Thus, in conclusion, this essay has considered: the definition of soil, identifying the components of, and its contribution to soils unique properties, and the critical roles in which soils play to sustain life on Earth. Soil, therefore, coincides with life on our

Outline the role of the photosynthesis process to explain what is meant by this statement. (3 marks)

Chemists refer to the energy stored in a substance as the heat content or enthalpy of the substance. The heat of reaction is determined by the difference in the enthalpy between the reactants and products.

Climate change is a rising issue of importance in our day and age, and one that is threatening our global society on many levels. In the past few decades, scientists have discovered that our planet’s climate has been changing at an alarming rate. The way in which we have changed the land to

The Kelvin-Planck and the Clausius statements are equivalent in their consequences, and either statement can be used as the expression of the second law of thermodynamics. Any device that violates the Kelvin-Planck statement also violates the Clausius statement, and vice versa. This can be demonstrated as follows:

change are, heat needs to change from a flowing fluid to kinetic energy in transit and

Heat is a form of energy that is transferred between two substances at different temperatures. The flow of the energy is from the object of higher temperature to the object of lower temperature. The heat is measured in units of energy, usually calories or joules. Temperature on the other hand, is how cold or hot an object is. The temperature is the average kinetic energy per molecule of a substance. This is measured in degrees on the Celsius or Fahrenheit or in Kelvins.

Thermodynamics is the study of work, heat, and the energy of a system (NASA, 2010). To help explain in more detail the properties of thermodynamics are the laws of thermodynamics. The first law explains that a system’s internal energy can be increased by adding energy to the system or by doing work on the system (Serway & Vuille, 2012). An internal energy system is the sum of both its kinetic and potential energies. The first law more simply states that the change in internal energy of a system is caused by an exchange of energy across the system, typically in the form of heat, or by doing work on the system. This relationship