Conferring and clasift in the science subject

Ppowerton presentation

1. In Science IN SCIENCE IN SCIENCE THERE ARE MANY PROCESSES(2X) OBSERVING, COMPARING, CLASSIFYING INFERRING IN SCIENCE IN SCIENCE THERE ARE MANY PROCESSES(2X)

2. HURRAY BOOM

3. PHYSICAL CHANGE BOOM NOT PHYSICAL CHANGE

4. GUIDE QUESTION 1. What happened to the baking soda when it was mixed with vinegar? 2. What happened to the color of the apple after slicing it? 3. What is the color of the residue in the spoon when sugar is completely burned? What is the taste?

5. STEPS 1.Put vinegar in the baking soda. Observe what happens .   2. Slice the apple and observe what will happen to the color of its skin after being exposed to air. 3. Heat the sugar in the spoon until it is completely burned.

6. GUIDE QUESTION 1. What happened to the baking soda when it was mixed with vinegar? 2. What happened to the color of the apple after slicing it? 3. What is the color of the residue in the spoon when sugar is completely burned? What is the taste?

7. PUPIL’S ANSWER 1. The baking soda formed bubbles when it was mixed with vinegar. 2. The color of the apple becomes brownish . 3. The color of the sugar turned to brown and the taste becomes bitter.

8. Chemical change occurs when two or more substances react chemically and produce a new substance. The product of chemical change cannot be brought back to its original form

9. Direction: Identify whether the change that occur is chemical change or physical change. If the change is chemical write “C” and if it is physical write “P”. Write it before the number. _____1. Drying of wet laundry _____2. Cutting of piece of wood _____3. Rusting of iron _____4. Melting of ice _____5. Making vinegar

10. _____6. Spoiling of milk _____7. Cooking pinakbet _____8. Digestion of food _____ 9. Cutting of plan stem _____10. Baking bread

11. Direction: Write TRUE if the statement is correct and write FALSE is the statement is incorrent . ____________ 1. Chemical change is a change in the composition of the materials. ____________ 2. The product of chemical change can be brought back to its original composition. ____________ 3. Burning of wood is one example of chemical change.

12. Direction: Give three examples of chemical change. Give the new substance formed. New substance formed   ____________ ____________ ____________ ____________ ____________ ____________

13. Assignment:   List down at least five (5) chemical changes that usually takes place at home. Write it on your science notebook.