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Principles Of Physics (PH 101) Lab Report LAB #10

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Sandra Watson
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heat absorption by solids and liquids lab report

Queensborough Community College

Principles Of Physics (PH 101)

1- a)Introduction
Calorimetry is the science of measuring heat. We will use a calorimeter to measure the amount
of heat transferred from the two different metals to water. By knowing the value of the specific
heat of water we will then be able to calculate the specific heat of the both metals. Our metals are
Copper, and Aluminum. Also 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
= (Energy change in calories.) /Mass in grams x Temperature change in
Celsius). 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.
b) Objective
The purpose of this lab was to find the total heat loss of the water when placed in the calorimeter.
Changes in heat can be determined by measuring changes in temperature which is what was
measured in this lab. The heat gained depends on the mass of the substance in grams, the specific
heat of the substance, and the change in temperature of the substance. In this lab we calculate all
of these things to find the heat capacity of the Calorimeter.
2- a) Theory
The Specific heat of a substance is an intensive property that relates the
temperature and heat of an object. It is defined as the quantity of heat
required to raise 1 gram of a substance by 1 and has units of (J/g, cal/g, or J/
mol). The relationship between heat (q), specific heat (s), mass (m) and a
temperature change (Δt or tf − ti) can be expressed mathematically as: q =
m · s · Δt (1) The change in temperature of a substance is often expressed
using the greek letter delta (Δ) “which means the change in”. This can also
be expressed as the final temperature (tf ) minus the initial (ti) of an object.
Knowing 3 of the variables in the equation above allows us to solve for the
fourth variable.

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Principles Of Physics (PH 101) Lab Report LAB #10

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