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OUR LESSON

Chemical Change. OUR LESSON. Physical Change. Objective: Tell the difference between physical and chemical change. Objective: Identify the changes a matter undergoes. Group Achievements. Complete the Think It Through silently. M ove around the room in groups to each station.

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OUR LESSON

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  1. Chemical Change OUR LESSON Physical Change

  2. Objective: Tell the difference between physical and chemical change.

  3. Objective: Identify the changes a matter undergoes

  4. Group Achievements

  5. Complete the Think It Through silently. • Move around the room in groups to each station. • Observe the changes that is happening in the materials. • Choose from Physical Change or Chemical Change. THINKSHEET

  6. #1 Cup of Ice, Cup of Water #2 Rust on Metal Object #3 Small plant, Larger plant (same type of plant #4 Moldy Bread in bag #5 Curdled milk #6 Water, Colored Water #7 Candle melting #8 Digestion Physical Change THINKSHEET Chemical Change Chemical Change Chemical Change Chemical Change Physical Change Physical Change Chemical Change

  7. Group Achievements

  8. Each group will re-arranged the jumbled phrases into a correct idea about physical and chemical change. • The group will post this to a manila paper and present to the class. Activity 2: Completing the Idea

  9. ACTIVITY 2 the form of a substance to another substance a physical change alters but does not change it when it becomes new or different matter Chemical changes are changes matter undergoes

  10. ACTIVITY 2 the form of a substance to another substance a physical change alters but does not change it

  11. ACTIVITY 2 when it becomes new or different matter Chemical changes are changes matter undergoes

  12. Group Achievements

  13. ? Activity 3: Physical or Chemical Tell what change is happening in the picture.

  14. Physical change • Cutting paper?

  15. Lighter fluid burning Chemical Change

  16. Physical Change • Crushing an tablets

  17. Sawing wood? Physical Change

  18. Precipitation Chemical Change

  19. Chemical Chnage 3. Gas Production

  20. Chemical Change • Logs burning

  21. Chemical Change 2. Color Change

  22. CHEMICAL CHANGE • fireworks.

  23. Group Achievements

  24. Based on the activity that you had performed, who can now discuss the difference between physical and chemical change? Generalization?

  25. Physicalchange • A physical change alters the form of a substance, but does not change it to another substance. • It changes shape or size • It dissolves. • It changes phase (freezes, boils, evaporates, condenses) • Example: Making Orange Juice

  26. Chemical Change • Chemical changes are changes matter undergoes when it becomes new or different matter. • It burns • Temperature changes without heating/cooling • It bubbles (makes a gas) • It changes color • It forms a precipitate

  27. When a substance undergoes a chemical change, it is changed into a different substance with different properties. • To identify a chemical change look for signs such as color change, bubbling and fizzing, light production, smoke, and presence of heat. • Example: Baking a Cake

  28. Who among you here can give other examples of physical and chemical changes of matter that are happening in community?

  29. Identify the Change? • Tears up paper? Physical change • Mixes salt and water? Physical change • Burns paper? Chemical change • Evaporates salt water? Physical change • Mixes vinegar and baking soda? Chemical change

  30. ASSIGNMENT • Research on the phase changes of matter and differentiate one from the other.

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