Chemical changes

chemical changes

1. Chemical Changes/Reaction Changes Occurring in Food Processing

2. Objectives Content Standard Explain the different process that occurs in food processing. Performance Standard Choose one way of preserving foods and explain the changes that occurs during the preservation, storage and utilization Learning Competencies Discuss the changes occurring during food processing, storage and utilization

3. Unpacked Learning Competencies Explain chemical changes Discuss the different type of chemical reaction Identify which among these chemical reaction is common in food processing.

4. Elicit 3 volunteers to discussed what they have learned from the previous lesson This Photo by Unknown Author is licensed under CC BY-SA-NC

5. Engage

6. Explore What can you infer in the video that you have just watched? Could this chemical reaction will also be found in food processing? Explain your answer.

7. Explain Chemical Reaction A process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

8. Explain Chemical Reaction

9. Parts of a Chemical Reaction Reactants Products Reactants A substance that takes part in and undergoes change during a reaction. Products Substances created by the chemical change (new bonds form).

10. Parts of a Chemical Reaction Reads as “Yields” (s) Solid (l) Liquid (g) gas ( aq ) aqueous solution (the substance is dissolved in H2O) (+) Substance is added ( ) Heat is added

11. Parts of a Chemical Reaction Catalyst Catalysts is added Inhibitor Inhibitors is added ( ) Evolution of gas ( ) Precipitate is form

12. Evidences of Chemical Reaction Formation of new substance This Photo by Unknown Author is licensed under CC BY

13. Evidences of Chemical Reaction Evolution of Light/Heat

14. Evidences of Chemical Reaction Change in temperature This Photo by Unknown Author is licensed under CC BY-SA

15. Evidences of Chemical Reaction Evolution of gas This Photo by Unknown Author is licensed under CC BY-NC-ND

16. Evidences of Chemical Reaction Formation of precipitate This Photo by Unknown Author is licensed under CC BY-SA-NC

17. Evidences of Chemical Reaction Change in color This Photo by Unknown Author is licensed under CC BY

18. Elaborate This Photo by Unknown Author is licensed under CC BY-SA-NC

19. Types of Chemical Reactions Single Replacement (Displacement) (Redox) Double Replacement (Displacement) (Metathesis) Synthesis (Combination) Decomposition Combustion

20. Types of Chemical Reactions Single Replacement (Displacement) (Redox) Double Replacement (Displacement) (Metathesis) Synthesis (Combination) Decomposition Combustion