Specific heat lab pdf

Heat 250 ml of water in a 400ml beaker until it is boiling gently. Calculations specific heat of a metal lab specific heat of a metal lab determine the specific heat constant of a metal using a coffee cup calorimeter. In this experiment we will neglect the heat absorbed by the styrofoam container as it is negligible. Measure the specific heat of water and other fluids. In addition to the principle of specific heat, the experiment also demonstrates some basic electrical principles such as ohms law. C which is a large value compared to other substances. The purpose of this experiment is to identify two unknown metal. The amount of heat, q gained or lost by a substance is q cmdt 1 where c is the speci. Recruit student volunteers to measure and record data. The specific heat of a metal bainbridge island school. We start the lesson by first introducing and defining what it is, specifically from an energy use point of view.

This is a simple experiment to measure the specific heat also called specific heat capacity of any fluid. List the three methods of heat transfer and one example of each. To measure specific heat in the laboratory a calorimeter of some kind must be used. Calorimeter, stirrer, centigrade thermometer, boiler with heater, balance, metal sample, water. Generally, the specific heat capacities for solids are a few hundred j kg c, and for liquids theyre a few thousand j kg c. H1 determination of the specific heat capacity of an object by the method of cooling 1. Mar 28, 2020 a container that prevents heat transfer in or out is called a calorimeter, and the use of a calorimeter to make measurements typically of heat or specific heat capacity is called calorimetry. The relationship between heat and temperature changed is usually expected in the form.

Also known as heat capacity, the specific heat is the amount of the heat per unit mass required to raise the temperature by one degree celsius. In this lab, a calorimeter will be used in order to calculate a heat change. Return or dispose of all materials according to the instructions given by your teacher. We then transition into a mini lab which quite literally demonstrates the process of how water, due to its high specific heat, will not change temperature as easily as other surfaces, due to its inherently high specific heat. Heat capacity 29celsius and the specific heat capacities in calories per gram per degree celsius, the block of substance has thus given mctb t2 calories of heat to the calorimeter and the contained water.

Specific heat of a metal lab part of ncssm core collection. The purpose of this activity is to demonstrate five equalmassed metal specimens, when heated to the exact same temperature and added to a precise amount of water, will alter the temperature of the water to a significantly different extent. Ideally, this means that the results of an experiment performed in. In this laboratory experiment, you will burn food to measure the amount of heat energy it. They will set up a calorimeter to measure the heat changes of two. Water was chosen as the standard and assigned a specific heat of 1. Use the bluetooth icon to connect the temperature sensor. Specific heat problems 1 how much heat must be absorbed by 375 grams of water to raise its temperature by 25 c. Investigate what happens when a piece of hot metal is added to a. Specific heat a thought experiment imagine you have two sauce pans, one with 2 liters of water and one with 1 liter of water at room temperature. Specific heat of a metal the amount of heat which one object transfers to another depends upon the mass of the object, the temperature change it undergoes, and its specific heat. T tfinal tinitial 2 the specific heat capacity or just specific heat is the heat capacity per gram of the reservoir liquid and is given the symbol, c. It is an intensive property, a characteristic physical property of a substance. Ninth grade lesson specific heat virtual labs betterlesson.

What is the specific heat capacity of silver metal if 55. Specific heat is the amount of energy measured in joules, needed to raise the temperature of one gram of the substance one celsius degree. A calorimeter is a wellinsulated container used in measuring energy changes. Often applied to metallic elements, specific heat can be used as a basis for comparing energy absorption and transfer. The specific heat, s, of an object is an intensive property describing the number of joules it takes to raise the temperature of 1. T, its mass m, and an intrinsic characteristic of the material forming the body called specific heat c. If the law of conservation of energy is true, heat released by a hot object metal must be equal to the. The first term on the righthand side of equation 2 is the heat gained by water of mass mw and specific heat cw 1. Measurement of specific heat 73 measurement of specific heat objective. How much heat is released from 50g of water as it a. Put about 400 ml of water tap or distilled into a 600 ml beaker and heat it to boiling on a. Define objectives a calorimeter, measure changes in the temperature of in the calorimeter when metals are added. Specific heat is defined as the amount of heat required to increase the temperature of one gram of a substance by one degree celsius.

You place them on the stove on identical burners and turn the stove to its. The purpose of this lab experiment is to measure the specific heat capacity of unknown metal samples and also to determine the latent heat of fusion of water. Particularly that the thermal energy contained by the material inside the calorimeter is conserved. The specific heat capacity of a solid or liquid is defined as the quantity of heat required to change the temperature of a unit mass of a substance through a unit change in temperature. List the symbol and at least two units for specific heat. Specific heat capacity is the amount of energy, measured in calories or joules, needed to raise the temperature of 1 g of the substance by 1 c. The belong to will play how you will get the specific heat of metal lab answers.

Lab report testing reactions with a calorimeter a team was sent to the chemical. Experiment 9 specific heat capacities of metals chem21labs. The opposite is true of materials with high specific heat they need high energy to increasedecrease temperature. Specific heat is the amount of energy, measured in joules, needed to raise the temperature of one gram of the substance one celsius degree. The specific heat of a substance, usually indicated by the symbol c, is the amount of thermal energy required to raise the temperature of one gram of the substance by 1oc or 1k. Specific heat is the energy required to raise the temperature of 1. Calorimetry, heat of reaction specific heat is an intensive property of a single phase solid, liquid or gas sample that describes how the temperature of the sample changes as it either absorbs or loses heat energy. Wear chemical splash goggles whenever working with chemicals, heat, or glassware in the lab. Specific heat lab winstonsalemforsyth county schools. To measure specific heat in the laboratory, a calorimeter of some kind must be used. Specific heat lab report free download as word doc.

Temperature reflects the average total kinetic energy of particles in matter. Specific heat lab drexel university information technology. In this experiment we shall neglect the small variations in the specific heat with temperature and treat all specific heats as constants independent of temperature. As students worked with their groups i had to make sure to walk around and help them with an example of solving for c as that most groups just wanted to multiply.

Measure its mass and record the exact mass in table 1. Conservation of energy 1 answer the question, using complete sentences. Specific heat of a metal lab temecula valley unified. Heat transfer, specific heat, and calorimetry physics. While the water is heating, determine and record the mass of. This video shows the collection of data to determine the specific heat of a metal. If there is no loss into the environment, whenweaddawarmmetaltocoldwater,theheatgainedbythewater, q w,mustequal theheatlostbythemetal, q m,andwehave. Measurement of specific heat 74 in this experiment, the specific heat of an unknown metal, cmetal, will be obtained by mixing a known mass of a hot metal sample at temperature th with cool water in a calorimeter at temperature tc and. The purpose of this lab is to calculate the specific heat of aluminum using calorimetry. Calculate the specific heat of each metal, always safety goggles, gloves. Phys 1401 general physics i experiment 12 specific.

The biggest confusions that students had with this lab is making sure to calculate for c,the specific heat, not q, not q, the heat transferred, and answering the final question. The method to determine the specific heat capacity of a substance, the method of mixtures is often used. Define specific heat, water equivalent and heat capacity of a body. Students will be able to calculate the amount of calories per gram of different foods and determine the specific heat capacity of various substances through. T, its mass m, and an intrinsic characteristic of the material forming the body called specific heat c p. As we learned earlier in this chapter, heat transfer is the movement of energy from one place or material to another as a result of a difference in temperature. A system encompasses the substances that are involved in a reaction, and everything else in the universe other than the system is called the environment. Find the specific heat of the unknown metal given using calorimetry. One of the physical properties of any substance is specific heat. The specific heat capacities of all other substances. For gases, the same equation applies, but there are two different specific heat values. The amount of heat required to raise the temperature of a solid body depends on its change in temperature. And specific heat lab answers and numerous ebook collections from fictions to scientific research in any way. The term is also used in a narrower sense to mean the amount of heat, in calories, required to raise the temperature of one gram of a substance by one celsius degree.

In every reaction, energy is transferred between a system and its environment. A calorimeter is a well insulated container used in measuring energy. Do not touch hot equipment and handle hot glassware carefully. Specific heat is a measure of the heat capacity of a substance. A vessel, called calorimeter, of known specific heat capacity sc and mass mc is partially filled with a mass mw of water at a temperature t1 and then mounted in a suitable manner so. This property can be measured quite accurately and is called specific heat cp. We will use the term calorimetry problem to refer to any problem in which the objects concerned are thermally isolated from their surroundings. Students will learn about specific heat capacity and how to calculate it. Heat is defined as the flow of thermal energy, and as such, has s. Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. While the water is heating, determine and record the mass of a clean, dry 50ml beaker to the nearest 0. Specific heat is usually represented by the symbol s and is.

In addition, we will study the effectiveness of different calorimeters. More water than that and youll never get it to boil. Introduction the porpoise of these is to determine the specific heat. Heat capacity by jamu alford with help from sari belzycki abstract using a styrofoam cup as a calorimeter the specific heat of water was found to. In addition, we will study the effectiveness of different calorimet. We then transition into a minilab which quite literally demonstrates the process of how water, due to its high specific heat, will not change temperature as easily as other surfaces, due to. You place them on the stove on identical burners and turn the stove to its highest setting. In table 1, you can view the specific heat of many common substances. One intensive physical property is specific heat cp the amount of heat energy needed to raise the temperature of one gram of a material by one degree celsius. The direction of flow is from the object at higher temperature to the object. Jun 03, 2017 csec physics lab specific heat capacity 1. Our result from this experiment was somewhat close to the specific heat capacity for water, but still off the mark. Phys 1401 general physics i experiment 12 specific heat i.

Specific heat, ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree. We have seen in previous chapters that energy is one of the fundamental concepts of physics. T a specific amount of energy is required by the same mass of every substance to change its temperature by 1oc units q kcal. Chem 9 lab guide page 1 experiment 9 experiment 9 specific heat capacities of metals the purpose of this experiment is to identify two unknown metal samples based on physical properties. The specific heat capacity of a substance is the amount of energy required to raise the temperature of one gram of that substance 1. Ap chemistry specific heat of a metal lab temperature.

713 1292 220 617 1661 240 191 313 113 1207 1389 1166 1017 995 585 123 530 1355 1648 389 758 1070 279 771 1034 1418 896 233 1013 715 465 1122 1260 971 1418 1478 295 260 287 880 629