sci pptx q1 wk 4 day 1-5.pptx

1. PRECILA R. UMALI
Jose Zavalla Memorial E/S
REVIEW
Distribute the pieces of scratch paper to the class.
Ask them to manipulate it to show physical
change through:
Folding
Cutting
Crumpling
Tearing
The teacher will perform a simple demonstration of
burning paper.
Note: Collect the papers after the activity.

2. PRECILA R. UMALI
Jose Zavalla Memorial E/S
1.What happened
to the scratch
paper?
2.What changes
did you observe?
3.Can you return
the ash into a
scratch paper?
4.Why or
Why not?

3. PRECILA R. UMALI
Jose Zavalla Memorial E/S
What I know What I want to
Know
What I learned
Predict what will happen if we heat white sugar in a pot. Fill up
the chart below. What happen to the sugar
inside the pot when heated?

4. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Activity
What you need:
2 tablespoons of white/refined sugar
pot spoon
Stove/alcohol lamp/candle
Procedure:
1. Pour 2 tablespoons of sugar in a pot.
2. Turn on the stove and heat the sugar in low fire.
Caution: Be very careful when heating the sugar. The
teacher may assist on this part. Do not taste it.
3. Observe what happened.
4. Turn off the stove when the sugar is about to
melt.

5. PRECILA R. UMALI
Jose Zavalla Memorial E/S
5. Record your observations on the chart below.
Characteristics Before
Heating
After Heating
color
State/phase
odor

6. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Group Reporting
Discussion/Analysis
1.Did the sugar change its color? Describe it.
2. Did its phase change?
3. What are the indications that the
sugar really underwent chemical change?
4. Is there a new product formed?
5. What were the changes that occur in
sugar due to application of heat?
6. Are your predictions correct?

7. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Generalization
1.What is chemical change?
2.What are the indications of chemical
change?
A chemical change occurs to materials
when heat is applied. Change in color,
taste and odor, production of smoke,
ash, bubbles, fire, new products and
even heat are the indications of
chemical change.

8. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Application:
1. Is formation of bubbles an
indication of chemical change?
2. When burning a paper, what
are the new products formed?

9. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Write the letter of the correct answer
1. Aling Maring burns leaves early
in the morning in their backyard.
Which of the following is the
indication that material formed
into new form when heat is
applied on it?
A. ash B. fire C. heat D. smoke

10. PRECILA R. UMALI
Jose Zavalla Memorial E/S
2. Which of the following
procedures in cooking banana
cue involves
chemical change?
A. peeling the bananas
B. melting the sugar
C. putting the bananas on the
sticks
D. selling the banana cue

11. PRECILA R. UMALI
Jose Zavalla Memorial E/S
2. Which of the following
procedures in cooking banana cue
involves
chemical change?
A. peeling the bananas
B. melting the sugar
C. putting the bananas on the
sticks
D. selling the banana cue

12. PRECILA R. UMALI
Jose Zavalla Memorial E/S
3. Ash is a new substance formed when
________.
A. pyrite comes into contact with
acid.
B. food is digested.
C. a fruit turns moldy.
D. wood is formed.

13. PRECILA R. UMALI
Jose Zavalla Memorial E/S
4. Which of the following activities
showed chemical change
due to application of heat?
A. pancake making
B. cutting of wood
C. straightening of hair
D. rusting of nail

14. PRECILA R. UMALI
Jose Zavalla Memorial E/S
4. Which of the following activities
showed chemical change
due to application of heat?
A. pancake making
B. cutting of wood
C. straightening of hair
D. rusting of nail

15. PRECILA R. UMALI
Jose Zavalla Memorial E/S
5. Which of the following is NOT an
indication of chemical
change due to application of heat?
A. change in color
B. change in odor
C. change in taste
D. change in size

16. PRECILA R. UMALI
Jose Zavalla Memorial E/S
5. Which of the following is NOT an
indication of chemical
change due to application of heat?
A. change in color
B. change in odor
C. change in taste
D. change in size

17. PRECILA R. UMALI
Jose Zavalla Memorial E/S
Thank you

18. PRECILA R. UMALI
Jose Zavalla Memorial E/S
WEEK 4 Day 2
Lesson 17:
Signs When Materials Undergo
Physical and Chemical Change
Due to Presence/Lack of Oxygen

19. Let pupils identify the materials that undergoes chemical
change as shown
Review

21. photosynthesis
Ripening of fruit

22. Let the pupils do the activity
Activity Give Me the Signs
What you need:
candle, candle holder, matchstick, glass, apple, bowl of water
What to do:
1. Put the candle in a candle holder.
2. Light up the candle. After a minute, observe the physical and
chemical changes that happen to the candle when air is present.
3. Cover the lighted candle with a glass.
4. Observe what happened to the candle after covering it with a
glass.
5. Slice the apple into halves.
6. Expose the first half of the apple into the air for few minutes
7. Soak the other first half in a bowl of water

23. Material Change that Happen
to Material When
Oxygen is Present
(lighted candle
uncovered; sliced
apple exposed to
air)
Change Happen to
Material When
Oxygen is absent
(lighted candle
covered; sliced
apple soaked in
water)
lighted candle
sliced apple
Recording the observation

24. Guide Questions-see activity cards
1.What have you observed from the burning candle when it is
uncovered and covered?
2. What helped the candle continue burning? Explain your answer
3. What changes took place in the candle?
4. What happened to the sliced apple exposed to the air and
soaked in water?
5. What changes took place in both of the halves of the sliced
apple?
6. What physical change(s) occurred?
7. What chemical change(s) occurred?
8. What condition contributed to these changes?
9. Have you observed rusting of iron window grills, why do you
think this change occur?
10. To what elements are iron window grills exposed to?
11. What do you think are the reasons of rusting?

25. Generalization
* Can you enumerate signs when
materials undergo physical and
chemical change due presence of
oxygen?
*How about the signs when
materials undergo changes due to
lack of oxygen?

26. Materials undergo chemical change in
different ways. During the change process,
one or more new materials with different
compositions can be formed. For the
chemical reaction to happen heat energy or
other substances are needed to break the
bonds of molecules. The speed rate of
chemical reaction in different materials
depend on temperature, presence of light,
pressure, and presence of catalyst, and
electricity.

27. Identify the sign when materials undergo
change in each of the
following situation below:
1. Aling Juana is a banana cue vendor.
One time, she asked her
daughter to help her peel the banana.
It took them an hour to
finish the task. She found out that all
the peeled banana on the
plastic tray turned into brown.

28. 2. Father found a dead rat inside the
stock room. The decomposed body of
the rat produced unpleasant odor. He
disposed it by burying the remains into
the soil.
3. Yaya Meling left the glass of bottle of
milk on the table. The next morning she
found out that there were bubbles
formed.

29. 4.Gelyn went to Baguio for a
vacation. She forgot to place her
plants outside the garden.
When she came back the plants
were wilted.

30. 5.Leftover soup was placed on
a container for two days on the
table. Bubbles formed because
it is already spoiled.

31. Assignment
Answer the following questions:
1. Aside from camote, what other
foods turns brown when exposed
to air?
2. What will you do to leftover
foods to avoid spoilage?

32. WEEK 4 Day 3
Lesson 18: Signs when Material
Undergo Physical and Chemical
Change due to Application of Heat
PRECILA R. UMALI
Jose Zavalla Memorial E/S

33. REVIEW
Analyze each picture. Tell whether the
change shown is physical or chemical
change then enumerate the signs of change.
1.

34. 2.
3.

35. 4.
5.

36. 6.
7.

37. 6. 7.

38. 9. 10
.

39. Arrange the jumbled
letters to form the words which we will use in out activity
later. The meaning of the words serves as your clue
1.OUBTSINCOIN - igniting or fire
2.ERETUTMEPRA - hotness or coldness
3.OOTS- dirt
4.PERISPIATTE - to become separated
from a liquid
5.EVERRISLEB – able to be changed
back to original form

40. Group activities-SEE ACTIVITY SHEETS
Activity
Materials undergo change due to application of heat
Problem: What are the signs of physical and chemical change due to
application of heat?
Materials: worksheet, matchstick, candles, empty tin can, ice, holder
Procedure:
1. Light a matchstick until the half of the stick is burned. Observe
what happens.
2. Light a candle. Using a holder, place an empty tin can over the
flame of the candle. Notice what is formed at the bottom of the
can.
3. Go outside. Put an ice anywhere. Leave it for 5 minutes.
Observe what happens.

41. Materials What
causes the
materials
to change?
What is
produced?
What are the
signs that the
materials
undergo
change?
Can it be
brought
back to its
original
form?
Matchstick
Burning
candle and
tin can
Ice

42. REPORTING
1.What caused the materials to change?
2.What happened to the matchstick when rubbed on a rough
surface?
3. What made the material continue burning?
4. Was there an energy released while the matchstick is burning?
5. What energy was released?
6. Is there a new material formed? Can it be brought back to its
original form?
7.What was formed at the bottom of the can?
8. What changes happened to the candle?
9. Can it be brought back to its original form?
10. How would you describe the ice before placing outside?
11. What happened to the ice after placing outside?
12. Was there a change in taste and color?
13. What change took place? Can it be brought back to its original form?

43. What are the signs of physical and chemical change when
heat is applied?
Physical change Chemical change

44. When a matchstick is rubbed against a rough
surface, friction is produced. The matchstick is
kindled. Its color changes into black. Smoke,
heat and ashes are produced. These are new
substances formed during combustion. They
become irreversible. Soot or dirt is formed
under the can when it is placed over the lighted
candle. Heat is also transferred through
conduction. Both the burned matchstick and
ash on the heated tin can are products of
chemical change.

45. In placing the ice outside, its solid phase and
shape becomes liquid. But no new material
is formed. It is physical change.
When heat is applied to materials that
undergo physical change, they change in
shape, texture, phase and temperature. On
the other hand, when heat is applied to
materials that undergo chemical change,
color, odor and temperature also change.

46. Evaluation
Identify the signs of change that are evident
in each picture.
1.Rough wood

47. 2.Finished wood

48. 3. painting a car

49. 4.Hot pan

50. 5. Lighting a firework

51. Assignment
Draw pictures that exhibits
signs of physical and
chemical change.

52. WEEK 4 Day 4
Lesson 19: Classification of
Changes in Materials
PRECILA R. UMALI
Jose Zavalla Memorial E/S

53. Teacher will distribute the envelope containing metacard)
Arrange the jumbled phrase to form the science ideas.
Paste your work on the manila paper.
Review
is a change in
the
composition
Chemical Change may be formed.
and
characteristic
of matter
where a new
substance

54. is a change only
in the
Physical Change is formed.
no new
material
state of matter and

55. FACT OR BLUFF
1. Liquid freezes into solid such that you can hold
water.
2. Due to physical change, the sweet sugar may
turn sour or bitter.
3. To dry clothes, liquid evaporates into gas called
water vapor.
4. There is no new substance formed when carbon
dioxide and water become food in the
plant.
5. Melting of candle is a change from solid to
liquid.

56. Activity
Where do I belong?
Problem: Which situations show chemical change and physical change?
Materials: table, chart
Procedure:
4. Study the following situations. Classify in the proper table .
a. stretching a rubber band without breaking it.
b. vegetable infected with pests.
c. tissue paper being burned.
d. breaking barbecue stick into 3 pieces.
e. cutting a sheet of cardboard into 4.
f. combining ammonia and vinegar.
g. smoke produced while heating the sugar.
h. food left outside the refrigerator gets spoiled.
i. pounding a teaspoon of peanuts.
j. bending a piece of wire to form a circle.
5. Classify changes that occur as to physical and chemical changes.

57. Physical Change Chemical Change
Record your answers in the table or chart below

58. Evaluation :
Classify the following changes in materials as
to chemical or physical.
___1. Fruit juice becomes alcoholic drinks.
___2. A liquid turns into gas when it is
heated.
___3. Banana turns sweet.
___4. Mother bakes your favorite cookies.
___5. Plastics and nylon stockings are
made from organic material

59. WEEK 4 Day 5
Lesson 20: Specific Changes that
Occur as to Physical and Chemical
Change
PRECILA R. UMALI
Jose Zavalla Memorial E/S

60. Review
Write “P” for Physical or a “C” for Chemical, to
indicate the type of change that is taking place.
____1. digestion of food
_____ 2. cutting of wood
_____ 3. melting of butter
_____ 4. ripening of fruits
_____ 5. water evaporating

61. What are the specific changes manifested by the
materials during physical and chemical change?
Physical Change
Melting (solid to liquid)
Freezing (liquid to solid)
Evaporation (liquid to gas)
Condensation (gas to
liquid)
Sublimation (solid to gas)
Deposition (gas to solid)

62. Chemical Change
Change in taste
Change in color
Change in odor
Precipitation
Effervescence or the formation of
bubbles
Exothermic and endothermic reactions

63. Physical Change
Melting (solid to liquid) is a physical
process that results in the phase
transition of a substance from a solid to
liquid
Freezing (liquid to solid) is a phase
transition in which a liquid turns into a
solid when its temperature is lowered
below its freezing point

64. Evaporation (liquid to gas) is a type
of vaporization of liquid into a
gaseous phase that is not saturated
with the evaporating substance. The
other type of vaporization is boiling,
which is characterized by bubbles of
saturated vapor forming in the liquid
phase

65. Condensation (gas to liquid) is the
change of water from its gaseous
form (water vapor) into liquid water.
Generally occurs in the atmosphere
when warm air rises, cools and
looses its capacity to hold water
vapor.

66. Sublimation (solid to gas) is the
transition of a substance
directly from the solid to the gas
phase without passing through
the intermediate liquid phase.

67. Deposition (gas to solid) is
the process in which gas
transforms into solid

68. Chemical Change
Change in color – is tarnishing, rushing,
and bleaching are example of changes
in color that are indicative of chemical
changes.
Change in odor – is putrefaction or
decay of organic matter, a chemical
change, is often accompanied by the
formation of foul smell. Any changes in
odor is almost always an indication of
chemical change

69. Change in taste – is the souring of milk and
other edible substances are also an
indication of chemical change.
Effervescence or the formation of bubbles
– is the formation of bubbles from leaves of
water plants is an indication of
photosynthesis, a chemical change. The
action of acids on metals and carbonates is
also a chemical change that is characterized
by effervescence

70. Precipitation – is the formation of
insoluble particles of solid may result
from a chemical change. The cloudy
suspension that results from the action or
carbon dioxide on limewater is a chemical
change
Exothermic and endothermic reaction –
is the loss or gain of heat in most changes
is often an indication of a chemical
change.

71. Process/Change Physical Change/Chemical
Change
Specific Change
1. Cloud Formation
2. Make food flavor
3. Drying Clothes
4. Making ice cream
5. Rusting of roof
Evaluation
Below is a list of changes in matter. Under the Physical Change or
Chemical Change. Identify the specific change column write PC if the
material underwent Physical Change and CC if Chemical Change the
occurs in each of the items listed.
:

72. Assignment:
Answer the following questions
1. What benefit can people can from
the following situations?
a. Evaporation of water
b. Burning of wood
c. Water into ice
d. Solidified ice cream