Procedure: Take time to observe as you cook rice. You can observe in whatever mode of cooking: Rice Cooker, Gasul or using Firewood (sugnod2x). Process Questions: What mode of cooking you are observing?________________________________________________________________________ What energy that makes the rice become cook?__________________________________________________________________ What type of energy is present before it was change to heat energy to cook the rice?_______________________________ Can chemical reaction happens without transformation of energy that takes place? Y/N Why? ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Illustrate the Process of Energy Changes in your observation below. Write the type of energy present.       __________________________---------> ____________________________==è Fully Cooked Rice      1st Energy Present                 changes         2nd Energy after changes            Chemical reaction

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 16.DCP
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Activity 6.1: Energy Transformation (page 2)

Procedure: Take time to observe as you cook rice. You can observe in whatever mode of cooking: Rice Cooker, Gasul or using Firewood (sugnod2x).

Process Questions:

  1. What mode of cooking you are observing?________________________________________________________________________
  2. What energy that makes the rice become cook?__________________________________________________________________
  3. What type of energy is present before it was change to heat energy to cook the rice?_______________________________
  4. Can chemical reaction happens without transformation of energy that takes place? Y/N Why?

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Illustrate the Process of Energy Changes in your observation below. Write the type of energy present.

 

    __________________________---------> ____________________________==è Fully Cooked Rice

     1st Energy Present                 changes         2nd Energy after changes            Chemical reaction

 

GO TO THE ANSWER SHEET PROVIDED!
MDI| Activity 6.1 Energy Transformation
Procedure: Take time to observe as you cook rice. You can observe in whatever mode of cooking: Rice Cooker,
II | Gasul or using Firewood (sugnod2x). Follow the procedures and answer the questions in your Answer Sheet.
Topic 2: Exothermic and Endothermic Processes
Exothermic
=> Exothermic reactions release heat and light into their surroundings. For
example, combustion reactions are usually exothermic. In exothermic
reactions, the products have less enthalpy than the reactants, and as a result, an
exothermic reaction is said to have a negative enthalpy of reaction. This means that
the energy required to break the bonds in the reactants is less than the energy
released when new bonds form in the products. Excess energy from the reaction is
SOML
released as heat and light.
AT O
Endothermic
=> Endothermic reactions, on the other hand, absorb heat and/or light from their
surroundings. For example, decomposition reactions are usually endothermic. In
endothermic reactions, the products have more enthalpy than the reactants. Thus,
an endothermic reaction is said to have a positive enthalpy of reaction. This means
that the energy required to break the bonds in the reactants is more than the energy
released when new bonds form in the products; in other words, the reaction requires
energy to proceed.
Transcribed Image Text:GO TO THE ANSWER SHEET PROVIDED! MDI| Activity 6.1 Energy Transformation Procedure: Take time to observe as you cook rice. You can observe in whatever mode of cooking: Rice Cooker, II | Gasul or using Firewood (sugnod2x). Follow the procedures and answer the questions in your Answer Sheet. Topic 2: Exothermic and Endothermic Processes Exothermic => Exothermic reactions release heat and light into their surroundings. For example, combustion reactions are usually exothermic. In exothermic reactions, the products have less enthalpy than the reactants, and as a result, an exothermic reaction is said to have a negative enthalpy of reaction. This means that the energy required to break the bonds in the reactants is less than the energy released when new bonds form in the products. Excess energy from the reaction is SOML released as heat and light. AT O Endothermic => Endothermic reactions, on the other hand, absorb heat and/or light from their surroundings. For example, decomposition reactions are usually endothermic. In endothermic reactions, the products have more enthalpy than the reactants. Thus, an endothermic reaction is said to have a positive enthalpy of reaction. This means that the energy required to break the bonds in the reactants is more than the energy released when new bonds form in the products; in other words, the reaction requires energy to proceed.
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