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)

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. 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.

8. 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?

9. 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.

10. 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

11. 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

12. _____6. Spoiling of milk
_____7. Cooking pinakbet
_____8. Digestion of food
_____9. Cutting of plan stem
_____10. Baking bread

13. 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.

14. Direction: Give three examples of chemical change.
Give the new substance formed.
New substance formed
a. ____________ ____________
b. ____________ ____________
c. ____________ ____________

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