LEARNING GUIDE HEAT EFFECT TO MATTER

LEARNING GUIDE
HEAT EFFECT TO MATTER

HEAT EFFECT OF MATTER

I. Objective:
To observe some heat effect to matters.
II. Theory:
Heat is also loosely referred to as thermal energy, although many definitions require this thermal energy to actually be in the process of movement between one body and another to be technically called heat (otherwise, many sources prefer to continue to refer to the static quantity as "thermal energy"). Heat is also known as "Energy". (http://en.wikipedia.org/wiki/Heat)
Energy transfer by heat can occur between objects by radiation, conduction and convection. Temperature is used as a measure of the internal energy or enthalpy, that is the level of elementary motion giving rise to heat transfer. Energy can only be transferred by heat between objects - or areas within an object - with different temperatures (as given by the zero law of thermodynamics).
Heat transfer is the transition of thermal energy from a hotter object to a cooler object ("object" in this sense designating a complex collection of particles which is capable of storing energy in many different ways). When an object or fluid is at a different temperature than its surroundings or another object, transfer of thermal energy, also known as heat transfer, or heat exchange, occurs in such a way that the body and the surroundings reach thermal equilibrium; this means that they are at the same temperature. Heat transfer always occurs from a higher-temperature object to a cooler-temperature one as described by the second law of thermodynamics or the Clausius statement. Where there is a temperature difference between objects in proximity, heat transfer between them can never be stopped; it can only be slowed. Heat trasfer is acomplished by three methods: conduction, convection and radiation.
( http://en.wikipedia.org/wiki/Heat_transfer).

III. Tools and materials:
1. Bunsen burner
2. Erlenmeyer tube
3. Metal stick
4. Plastisin
5. Balloon
6. Water
7. Spiritus
8. Ice block
9. Thermometer

IV. Method:
Part A:
1. Put balloon at the mouth of Erlenmeyer tube.
2. See the condition of balloon.
3. Heat Erlenmeyer tube with Bunsen burner.
4. See the condition of balloon after heating.
5. If there is change of balloon condition, switch off the burner.
6. See the condition of balloon.
7. Write the observation result at observation table.
Part B:
1. Put plastisin ball at the end of metal bar.
2. Heat the other end of metal bar.
3. Observe how long the plastisin ball will melt.
4. Write the observation result at observation table.
Part C:
1. Fill Erlenmeyer tube with ice block and add a few of water.
2. Measure the temperature before it heating.
3. Heat Erlenmeyer tube with Bunsen burner.
4. Every 5 minute, write the temperature and stop the heating when all of ice block are melt.
5. Make a graph that shows the relation between time and temperature.

V. Data :

Part A:
Balloon condition
Before heating After heating


Part B:
Time that plastisin need to melt : 2 minutes 13 seconds


Part C:
Time Temperature of water
0 minutes
5 minutes
…. minutes

VI. Question
1. What is the fact if heat influence solid based on practice?
2. What is the fact if heat influence liquid based on practice?
3. What is the fact if heat influence gas based on practice?