Hydrogen and the Noble Gases Hydrogen is the chemical element with atomic number 1. It is represented by the symbol “H”. It is an odorless‚ nonmetallic‚ tasteless and highly explosive gas. Hydrogen is the lightest and most abundant chemical element in the universe. It forms 1- ions when combined with metals‚ and 1+ ion when combined with non-metals to form acids. Hydrogen is “the fuel of life”; without it to combine with oxygen we would not have water. Water is made of two parts hydrogen
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Describe the implications for life if a body of water is affected by thermal pollution. Thermal pollution is a temperature change in natural bodies of water of that can and often does have negative impacts on the nearby ecosystem caused by human influence. The temperature change can be upwards or downwards. The major sources of thermal pollution are power plants and industrial factories. In most power plants‚ heat is produced when coal‚ oil‚ or natural gas is burned or nuclear fuels undergo fission
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ecosystems. To understand the rates in which certain species’ leaves decay and release the energy stored within them can demonstrate how quickly the energy becomes available to organisms in higher trophic levels. Between plant species the rate of decomposition varies according to leaf structure‚ chemical or physical defence and whether the species is allochthonous or autochthonous. Native species adapt to the predators that feed upon them and the same applies for the predators‚ adapting to the plants
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and research and development. FLIR not only manufactures thermal cameras‚ but they also offer products in the following industries: o Automotive o Border Security o Surveillance o Utility o Marine o Search & Rescue o Home Inspection o Medical FLIR’s annual revenue in FY07 was $219.2 million in the Thermography industry. The HeatSeeker 3000 will be in direct competition with FLIR’s B Series Thermal Imagers and the InfraCAM SD Thermal Imagers. They are targeted towards home inspectors‚ HVAC
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Linear Thermal Expansion The term thermal expansion refers to the increase in size of an object as that object is heated. With relatively few exceptions‚ all objects expand when they are heated and contract when they are cooled. Perhaps the most important exception to this rule is water. Water contracts as it cools from its boiling point to about 39.2°F (4°C). At that point‚ it begins to expand as it cools further to its freezing point. This unusual effect explains the fact that ice is less dense
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unit mass of liquid to vapour at a temperature of 100°C and a pressure of one atmosphere. Thermal energy is transferred through the glass windows of a house mainly by A. conduction. B. radiation. C. conduction and convection. D. radiation and convection. Thermal energy is transferred through the glass windows of a house mainly by A. conduction. B. radiation
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Thermal power plants are one of the main sources of electricity in both industrialized and developing countries. These plants have drawn flak on consumption of non-renewable sources of energy at a rapid rate and also since they release huge amounts of greenhouse gases into the atmosphere. The anti-greenhouse gas activists are calling for thermal power to be replaced by other cleaner sources of energy. Functioning of thermal power plant: In a thermal power plant‚ one of coal‚ oil or natural gas
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IB Thermal Physics MCQ questions ( Higher) 1. Thermal energy is transferred through the glass windows of a house mainly by A. conduction. B. radiation. C. conduction and convection. D. radiation and convection. 2. The first law of thermodynamics may be expressed in terms of the quantities below. DU‚ the increase in the internal energy of the system Q‚ the energy transferred to the system by heating W‚ the work done on the system Which one of the following is a correct statement
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THERMAL INSULATION MATERIALS Thermal insulation materials are specifically designed to reduce the heat flow by limiting heat conduction‚ convection‚ radiation or all three while performing one or more of the following functions: The main function of insulation is to reduce the heat transfer‚ the insulation material must have the appropriate characteristic to slow down the transport of heat occurred by conduction‚ convection and radiation. Conduction loss in insulation is negligible. There are
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Effects of Different Concentration of Catalyse on Hydrogen Peroxide Aim: In this investigation I will try to find how long it takes for the filter paper disc to rise up whilst varying the amounts of concentration of catalyse. Prediction: I predict that the lower the concentration of catalyse the longer it will take for the filter paper disc to rise to the surface of the tube. Equipment: 1. Hydrogen peroxide in a container 2. Flat bottom tube 3. Tweezers 4. Filter paper
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