# Physics Lab Report

Topics: Heat, Energy, Thermodynamics Pages: 4 (970 words) Published: August 27, 2013
SPECIFIC HEAT OF VARIOUS METALS

M. L. C. G. Marasigan, R. R. Mella, J. M. M. Mendones, M. A. Miranda, R. P. Nool, C. P. R. M. Orpilla, K. L. Pascual

Abstract

THIS EXPERIMENT IS ABOUT THE SPECIFIC HEAT OF VARIOUS METALS. THE MAIN OBJECTIVES OF THIS LABORATORY ACTIVITY ARE TO DETERMINE THE SPECIFIC HEAT OF METALS AND TO COMPARE THE EXPERIMENTAL RESULT OF SPECIFIC HEAT FROM THE STANDARD VALUE. ANOTHER PURPOSE OF THIS EXPERIMENT IS TO DETERMINE THE RELATIONSHIP BETWEEN THE SPECIFIC HEAT OF THE MATERIAL AND THE CHANGE IN TEMPERATURE. LASTLY, IS TO IDENTIFY THE FACTORS NEEDED TO CHANGE THE TEMPERATURE OF THE SUBSTANCE. AT THE END OF THE ACTIVITY ALL OF THESE OBJECTIVES WERE MET.

INTRODUCTION

When a substance is heated, the motion of its individual particles increases, resulting in an increase in temperature. The more heat that is added per gram of substance, the greater the temperature change. The relationship between the heat added, the mass of a substance, and the temperature change it undergoes is known as specific heat. Specific heat is defined as the amount of energy necessary to produce a temperature change of 1°C per gram of substance. The specific heats of different substances vary, and therefore this quantity may be useful in identifying an unknown. The measurement of heat changes is called calorimetry. In this lab activity, calorimetry will be used to determine the specific heat of an unknown metal. This will be done by using a styrofoam cup calorimeter containing water. A calorimeter is insulated so as to minimize any loss of energy to the surroundings. Therefore, when a heated piece of metal is placed into the calorimeter, all of the energy should be accounted for. In other words, the energy released from the metal should be gained by the water, with no loss to the surroundings. This is based on the Law of Conservation of Energy, which states that energy is neither...