Advantages And Disadvantages Of Heat Insulators
The substances which do not allow the heat energy to flow through them easily are called bad conductors of heat or heat insulators. '
From the term 'heat insulator ' we do not mean that heat energy does not flow through them. Actually heat energy flows, through them, but at a very small rate as compared to good conductors.
Glass, mica, ebonite, cotton, wool, asbestos, polyurethane foam (commonly known as PUF), wood, 'plastics are bad conductors of heat,
In addition to it, all liquids (except mercury which is a liquid metal) and gases are bad conductors of heat.
Activity
To prove that rate of flow of heat is different for different metals.
Material Require;one iron rod and one copper rod of same length and same thickness, eight brass pins, wax, two iron stands, a Bunsen burner.
…show more content…
Method :Fix four brass pins on a copper rod and an equal number of pins on an iron rod with the help of wax. Clamp the iron rod and the copper rod in iron stands as shown in Fig.
Heat-both the rods with a Bunsen flame, such that equal lengths of both rods are within the flame. In a few moments/ it is noticed that pin no. 1 on the copper rod drops. After some time pin no. 2 on the copper rod drops. It is followed by pin no. 1 on the iron rod: Thus, on the whole pins fall more rapidly from the copper rod than the iron rod.
Observation:Thus, the activity proves that the-rate of flow of heat is different for different metals.
From this activity it is clear that copper is a better conductor of heat than iron. It has been found that silver is the best conductor of heat The.nextin order are copper, aluminum, gold, iron, etc.
Practical Applications of Heat
Nt1310 Unit 9 Lab Report
405 Words | 2 PagesThe reason is that the iron has higher reduction potential, i.e. the ability to gain electrons, comparing to the zinc, but lower in comparison to the copper. 3. The goal of the 5th
6.03 Identity Lab Report
363 Words | 2 PagesThe purpose of this lab was to be able to use physical characteristics to determine the identity of an unknown compound. The data from this experiment classified aluminum as metallic; ascorbic acid, paraffin, palmitic acid, sucrose, graphite, and water as molecular; sodium chloride as ionic. In order to determine this, 3 tests were conducted. The first test was to test the conductivity of each substance at room temperature. In this test, only graphite and aluminum conducted.
Unit 3 M3
1419 Words | 6 PagesThe type of board I will be using has a density of 100 kg/m but will retain the same thermal conductivity but using a different grade of polyurethane foam that has fire resistant properties. This type of insulation has a relatively high compressive and tensile strength but during its production it does give off quite large amounts of Co2 and does contain toxic materials that could prove to be harmful to the surrounding environment. Although more costly the insulation having a higher strength and fire resistance will ensure that less maintenance will have to occur and so could be less expensive long
Nt1210 Lab 10.1
831 Words | 4 PagesThis reaction does not cause a rise in temperature. One other source is triboluminescence which is light produced from friction. Another source is electric discharge which is light produced when an electrical current passes through air or another, like neon, that produces a glow. Another source is light-emitting diode which is light produced when an electrical current passes through a semi-conductor which controls how well is conducts electricity.
The Crucible: Three Boiling Chips
292 Words | 2 PagesStudents first prepped for the lab by cleaning out the crucible. Three boiling chips were added in the crucible once it was wiped out with a paper towel. The crucible was then placed on a clay triangle two finger widths above the Fischer burner. After 10 minutes of the crucible being directly under the flame, the it was clean and students allowed time for it to cool down. Next, the students from then on used tongs to transport the crucible from weighing it and back to the clay triangle.
Unknown 6 Essay
680 Words | 3 PagesCharacteristic Property- Test 3- Flame Test Materials: tongs, unknown 6, matches Procedure: at the sink, we held a small piece of towel that was soaked with the liquid fraction 6 and held it with the tongs for the lit match to light it on fire. Data: We found that the unknown is flammable after it automatically lit on fire and burned during the burn test.
Cold Water Lab
630 Words | 3 PagesInfer why the current that was created during this lab is called a convection current. Convection is the movement caused within a fluid when hotter, less dense water, moves upward, and colder, denser water, moves downward. I infer that the current that was created during this lab is called a convection current because the colder, denser water, moved beneath the hot water, causing the hot water to move upward. 4. How does this experiment demonstrate water density?
Benjamin Franklin Research Paper Outline
724 Words | 3 PagesIntroduction 1 Benjamin Franklin was always loved to read and write and it led him to his amazing accomplishments. 2 Some of his accomplishments he had were in all subjects that are in schools today. 3 His accomplishments consisted of the first battery, the bifocal glasses, and he made the Odometer.
How Fast Does Alka Seltzer Make Gas
621 Words | 3 PagesThe control in the experiment is water. Units used while timing the productivity of gas from an Alka-Seltzer tablet in different temperatures is, seconds. In order to find out if temperature controls the rate of chemical reaction, whether hot water is a more effective way to make the gas produce at a faster speed, it would be necessary to compare the results of different temperatures at the end of each trial. In order to do this the scientists will measure the volume of gas that is produced within a 10 second interval time after the tablet begins to react.
Synthesis Decomposition And Displacement Reaction Lab Report
1316 Words | 6 PagesWhen the copper is heated, the flame of the bunsen burner changed from blue to green. The colour of the copper metal changed from a shiny reddish-brown colour to a dull gray-brown colour. When the magnesium is heated, it changed from a dull gray metal to a pale white colour. b) 2Mg (s)+ O2 (g) ----> 2MgO (s) Magnesium + Oxygen ----> Magnesium Oxide 2Cu (s) + O2 (g)----> 2CuO (s) Copper + Oxygen ----> Copper Oxide c)Copper
The Electric Kettle's Impact On Society
884 Words | 4 PagesThis coil has an electrical resistor which resists the flow of electricity, which in effect converts electrical energy into heat as energy goes through the coil. Due to this, the heat energy produced by the resistor heats up the water within the kettle to boiling point. The heating element is controlled by a bimetallic thermostat, which contains a variable resistor inside it. Integrated at the bottom of the kettle, it consists of a disc of two different metals bonded tightly together, curved in a particular direction. As temperature inside the kettle rises, one metal expands faster than the other, set up in a manner
Global Warming Speech
1192 Words | 5 PagesGlobal warming is a big problem that we have to face nowadays. If you search Google for the word “global warming’, you will get over 70 million pages of results. The subject has certainly drawn a lot of attention. And now I will talk more about “what is global warming” , the cause and the effects it has on the earth and also some possible solutions for this problem.
Essay On Kinetic Energy
921 Words | 4 PagesIn thermal energy or heat energy is how fast the particles of something are moving. The more temperature you have, the more thermal energy you have which means the particles will be much faster. A hot cup of coffee has lots of thermal energy unlike a cold beverage. In chemical energy, think ability of your body to do work. The glucose in your body is said to have "chemical energy" because the glucose releases energy when chemically reacted with oxygen.
Electrolysis In Chemistry Ia
2800 Words | 12 PagesChemistry IA Background information: Introduction: Electrolysis it’s a chemical process that when you pass an electric current into a solution or a liquid that contains ions to separate substances back to their original form. The main components that are required for electrolysis to take a place are: Electrolyte: it’s a substance that when dissolved in water it ionize and then it will contain free moving ions and without these moving ions the process of electrolysis won’t take place. Direct current (DC): This current provides the energy needed to discharge the ions in the electrolyte Electrodes: it’s an object that conducts electricity and it’s used in electrolysis as a bridge between the solution and power supply. A great example
The Importance Of Calorimetry
1386 Words | 6 PagesCalorimeter helped many generations to measure the quantity of heat using different types of devices; also they followed a specific procedure and equations to find out quantitative
More about Advantages And Disadvantages Of Heat Insulators
Nt1310 Unit 9 Lab Report
405 Words | 2 Pages6.03 Identity Lab Report
363 Words | 2 PagesUnit 3 M3
1419 Words | 6 PagesNt1210 Lab 10.1
831 Words | 4 PagesThe Crucible: Three Boiling Chips
292 Words | 2 PagesUnknown 6 Essay
680 Words | 3 PagesCold Water Lab
630 Words | 3 PagesBenjamin Franklin Research Paper Outline
724 Words | 3 PagesHow Fast Does Alka Seltzer Make Gas
621 Words | 3 PagesSynthesis Decomposition And Displacement Reaction Lab Report
1316 Words | 6 PagesThe Electric Kettle's Impact On Society
884 Words | 4 PagesGlobal Warming Speech
1192 Words | 5 PagesEssay On Kinetic Energy
921 Words | 4 PagesElectrolysis In Chemistry Ia
2800 Words | 12 PagesThe Importance Of Calorimetry
1386 Words | 6 Pages