March 19‚ 2013 Introduction: The objective of this lab was to carry out a systematic set of experiments in order to determine which combination of chemicals produce the brightest and longest lasting light‚ through chemiluminescence. Chemiluminescence can be defined as the emission of light by a chemical reaction that does not produce heat. Chemiluminescence can also be found in nature‚ where it is referred to as bioluminescence. This can often be found in many deep sea fish‚ algae‚ and fireflies
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The Sun The sun is the largest object in the solar system. It is a middle-sized star and there are many other stars out in the universe just like it. Even though it is only a middle-sized star it is large enough to hold over 1 million Earth ’s inside if it were hollow. The temperature on the sun is far too much for any living thing to bear. On the surface it is 10‚000 degrees Fahrenheit and the core is a stunning 27‚000‚000 degrees Fahrenheit. But don ’t worry we are over 90‚000 million
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HEAT TRANSFER Heat transfer‚ also known as heat flow‚ heat exchange‚ or simply heat‚ is the transfer of thermal energy from one region of matter or a physical system to another. When an object is at a different temperature from its surroundings‚ heat transfer occurs so that the body and the surroundings reach the same temperature at thermal equilibrium. Such spontaneous heat transfer always occurs from a region of high temperature to another region of lower temperature‚ as required by the second
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Introduction- Heat is energy that is warm. Heat energy comes from different energy forms or types like electrical. Heat is also natural‚ from the sun. Heat transforms by reflecting on something and giving it warmth. The temperatures on the coloured cans will vary because they absorb different amounts of heat. According to the particle theory when an object heats up the particles spread out and move more. Aim- The aim of this experiment is to test how colour affects the amount of heat being absorbed
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The Sun It’s crazy to think that the big ball of fire that we looked at through a telescope in the beginning of the semester used to be nothing more than a cloud of gas and dust. I mean this is the center of our universe and greatest source of energy we are talking about and it was just basically a bunch of tiny particles floating in space trying to find their place in the universe. It wasn’t till gravity hit that these particles started fusing together. As a result a star was born and began to
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Heat transfer Heat transfer is the transition of thermal energy from a hotter object to a cooler object ("object" in this sense designating a complex collection of particles which is capable of storing energy in many different ways). When an object or fluid is at a different temperature than its surroundings or another object‚ transfer of thermal energy‚ also known as heat transfer‚ or heat exchange‚ occurs in such a way that the body and the surroundings reach thermal equilibrium‚ this means that
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Protecting Yourself From the Summer’s Heat The summer is finally here! Although many of us like to leisurely spend time in the sun whether it means going for a walk‚ doing some much needed yard work or gardening‚ or just enjoying the beautiful outdoors‚ it is important to be aware about how much sun we get to avoid heat-related illnesses like heat exhaustion and heat stroke. Prevention is the first step in keeping us all healthy through these hot temperatures! To protect your health when temperatures
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Chemistry – Heats of combustion. To determine the heats of combustion of selected alkanols and to use this information to determine the heat of combustion for a longer chain alkanols. Formula ΔH=-mCΔT Heat of combustion ΔH/n = molar heat of combustion. Materials -100 degrees thermometer -glass stirring rod -aluminium beaker -electronic balance -bosshead and clamp -retort stand Method 1) Set up the apparatus as shown above. 2) Measure the weight of aluminium can 3) Use the
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of the sun - our star - eight planets and their natural satellites (such as our moon); dwarf planets; asteroids and comets. Our solar system is located in an outward spiral of the Milky Way galaxy. 10 Need-to-Know Things About Our Solar System: 1. Our solar system is made up of the sun and everything that travels around it. This includes eight planets and their natural satellites such as Earth’s moon; dwarf planets such as Pluto and Ceres; asteroids; comets and meteoroids 2. The sun is the
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Mechanisms of Heat Transfer Prepared by: Ms. Ana Antoniette C. Illahi 1 Conduction • conduction (or heat conduction) is the transfer of thermal energy between regions of matter due to a temperature gradient. Heat spontaneously flows from a region of higher temperature to a region of lower temperature‚ and reduces temperature differences over time‚ approaching thermal equilibrium. Prepared by: Ms. Ana Antoniette C. Illahi 2 (Heat Current in Conduction) • • • • • • • • H - Heat Current
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