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Directions: Tell whether the changes took
place is physical or not. Say P for
physical and NP for not physical.
____ 1. drying of wet laundry
____ 2. sawing of lumber
____ 3. burning of paper
____ 4. melting of ice
____ 5. solidifying of wax
____ 6. evaporation of water
____ 7. souring of milk
____ 8. breaking of rocks
____ 9. freezing of water
____ 10. digestion of food
What happened to the nail?
When the nail change in color, what is
the new material formed?
Can we bring back the rust into its
original material?
Complete the missing letter to form a
  word then read it. Use picture as your
  guide.
1. b _r_i_g of wood 2. co_bin_ti_n of
                         elements
3. ch_mi_al reaction   4. che_i_a_s
5. r_st_ng of nails
Changes happen around us but
we do not notice them whether it
form a new substance or not. When a
material or substance lost its original
substance then a chemical change
has taken place due to chemical
reaction. There are certain clues that
indicate the occurrence of chemical
change like a change in color, odor,
taste, formation of bubbles and
release of heat.
Directions: Identify which of the
following materials undergo
chemical change. Tell also the
condition that brought changes to
the materials.
1. rotten cabbage
2. rusted iron nails
3. cooked rice
4. crushed garlic
5. grated coconut
Directions: Write C if the
change happen is chemical
and P if it is physical.
______ 1. decaying fruits
______ 2. fruit falling from a tree
______ 3. ripening fruits
______ 4. chopping wood
______ 5. rusting of nails
Directions : Do this activity at home.
Procedure:
  1. Get a piece of charcoal.
  2. Examine it carefully.
  3. Describe the charcoal’s
  appearance.
Questions:
  Where does charcoal came from?
  Can you bring back charcoal to its
  original form?
  Why or why not?

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Chemical change

  • 1. Directions: Tell whether the changes took place is physical or not. Say P for physical and NP for not physical. ____ 1. drying of wet laundry ____ 2. sawing of lumber ____ 3. burning of paper ____ 4. melting of ice ____ 5. solidifying of wax ____ 6. evaporation of water ____ 7. souring of milk ____ 8. breaking of rocks ____ 9. freezing of water ____ 10. digestion of food
  • 2. What happened to the nail? When the nail change in color, what is the new material formed? Can we bring back the rust into its original material?
  • 3. Complete the missing letter to form a word then read it. Use picture as your guide. 1. b _r_i_g of wood 2. co_bin_ti_n of elements
  • 4. 3. ch_mi_al reaction 4. che_i_a_s
  • 6. Changes happen around us but we do not notice them whether it form a new substance or not. When a material or substance lost its original substance then a chemical change has taken place due to chemical reaction. There are certain clues that indicate the occurrence of chemical change like a change in color, odor, taste, formation of bubbles and release of heat.
  • 7.
  • 8. Directions: Identify which of the following materials undergo chemical change. Tell also the condition that brought changes to the materials. 1. rotten cabbage 2. rusted iron nails 3. cooked rice 4. crushed garlic 5. grated coconut
  • 9. Directions: Write C if the change happen is chemical and P if it is physical. ______ 1. decaying fruits ______ 2. fruit falling from a tree ______ 3. ripening fruits ______ 4. chopping wood ______ 5. rusting of nails
  • 10. Directions : Do this activity at home. Procedure: 1. Get a piece of charcoal. 2. Examine it carefully. 3. Describe the charcoal’s appearance. Questions: Where does charcoal came from? Can you bring back charcoal to its original form? Why or why not?