{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

!!gooo super mega awesome special lab gooo!!

# !!gooo super mega awesome special lab gooo!! - Heat Lost...

This preview shows pages 1–3. Sign up to view the full content.

Heat Lost & Heat Gained Introduction Heating is a result of energy transfer from object with higher temperature to an object with lower temperature. Two objects in contact that start at different temperatures will reach the same temperature – thermal equilibrium. If the two objects are enclosed in the environment that no heat is exchanged with surrounding, the amount of heat which flows from the hot object must equal the amount of heat which enters the cold object – the law of conservation of energy. As a result the thermal energy (heat) of the hotter object will decrease and that of the cooler object will increase. The metric unit for heat energy is Joule (J). Besides Joule, the unit of calorie “cal” is also used in metric system. A calorie is the amount of energy or heat, required to increase the temperature of one gram of water for one degree Celsius . The relationship between these two units is: 1 cal = 4.19 J or 1 J = 0.239 cal The amount of heat energy that is required to raise the temperature of one gram of a substance by one degree Celsius is called the specific heat capacity or Cp(Cp=j/kg×°C), or simply the specific heat of that substance, in other words every substances has a Cp for ex: Water 4186Cp Ice 2090Cp Steam 2010Cp Humans 3500Cp Specific heat being a way to quantify heat it can be used to solve for the heat energy value or Q using the equation Q=mCpΔT is valued in J Objectives To investigate and validate the equations for thermal equilibrium trough two different experiment, one being an experiment where two liquids of varied temperatures are mixed together to observe the temperature change; the second being an experiment involving a hot metal mass being submerged in a calorimeter

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Materials 2 Styrofoam Cups Calorimeter Balance Thermometer Metal Sample Paper Towels Tongs Stirring stick Procedure Part 1: Water 1. Measure and record the mass of each Styrofoam cup. If the masses are different mark them to distinguish from one another 2. Fill one cup about 1/3 full with hot water from the hot water pot. Measure and record the mass and temperature of this cup. Record your data.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 6

!!gooo super mega awesome special lab gooo!! - Heat Lost...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online