Entropy

Kinetic and potential energy play an essential role in the segments or phases in a heating or cooling graph representing an exothermic or endothermic process. Kinetic energy is the energy of a system that is in motion of the particles in the system. Potential energy is the energy of a system in which it represents the arrangement of the particles of the system. Kinetic energy and potential energy never increase or decrease at the same time, however, when one energy is changing the other remains…

1. Temperature : A temperature is an objective measurement of hot or cold. It is measured by thermometer (Paul S. Welch,1938). Its most common unit is celcius. It is an important physical property of water because temperature controls the rate of most of the chemical reaction. As temperature affects the growth, reproduction and immunity of living organisms, therefore, drastic temperature changes can be fatal to living organisms. 2. pH : pH is a numeric scale used to specify the acidity or…

How important is work in today’s society? Imagine a world without work, a world in which nothing would get accomplished, now imagine a world in which everyone enjoyed work, and accomplished countless tasks every day. There has to be a happy medium. In order for the world to be successful work is a necessity, everyone has their own attitude toward work and the exertion level they are willing to put in. My first observation leads me into my backyard where I observe my father meticulously picking…

Solar thermals are one of the more common solar systems; however, they are often referred based on their service rather than the name solar thermal itself. Solar thermals comes in many different variation; from focusing light, acting like a furnace, to application of a heating water, acting like a water heater; solar thermals are everywhere in everyday life (Kalogirou, 2004, p 238). While they are not commonly recognize as photovoltaic, they are widely used in many of its different form. How do…

Chemical reactions can be categorized based on the release or absorption of energy. For instance, chemical reactions that release energy are known as exothermic reactions and have a positive change in enthalpy. Moreover, chemical reactions that absorb energy are endothermic, which have a negative change in enthalpy. Since the energy released is usually heat, keeping track of the heat flow in reactions will help determine the change in enthalpy of a reaction. Observing the measurement of heat…

Basic concept of Qi Qi (氣), in Chinese, refers to all gaseous substances that make up the universe. Externally, it forms the air and gases in the atmosphere. Internally, Qi is regarded as the energy stored in human body. The concept of Qi can be traced back to the Ancient Chinese Philosophy, in which people held the belief that Qi is the fundamental life force of everything; it forms all matters in the universe and ranges from external environment to the internal energy stored inside the body.…

The purpose of this experiment is to find what design of calorimeter captured the most energy from a combusted ship. To find this, we tested each design, and calculated the amount of energy it captured from a baked potato chip. Throughout chemistry, physics, and life there are six specific types of energy. Although there are six specific types of energy, there are two main forms of energy. These types of energy are called, kinetic, and potential energy. Kinetic energy is a type of energy in…

Throughout this lab the goal was to figure out the enthalpy of combustion of magnesium. Enthalpy (H) is the energy stored in a substance during its formation. The amount of energy that may be absorbed or released when a chemical reaction takes place is known as the change in enthalpy (ΔH). If a reaction absorbs heat, then it will be positive number and will be called an endothermic reaction. If a reaction releases heat, then it will have a negative number and will be called an exothermic…

Quantity of heat Q = mcθ absorbed or lost by a substance 4. What does specific heat 900 J of heat needs to be supplied to 1 kg of aluminium 900 J kgof aluminium to produce a 1 °C -1 1 °C mean? temperature increase. 5. What does specific heat 4 200 J of heat needs to be supplied to 1 of water 4 200 J kg-1°C-1 kg of water to produce a 1 °C temperature mean? increase. 6. The physical When two objects of equal mass are heated at meaning of equal rates, the object with the smaller specific specific…

1. Cite everyday illustrations of the first and second laws of thermodynamics. How does the laws of thermodynamics underlie every organism’s ability to function? The first law of thermodynamics states that energy cannot be created or destroyed; however, it can be converted to other forms. An everyday illustration of the first law of thermodynamic is photosynthesis in which a plant uses sunlight, a form of light energy, to produce sugars that are assembled into glucose, which is a type of…