Useful
and Harmful Materials
I. Learning Competency: Use
the properties of materials whether they are useful or harmful
LO5:
Classify
useful and harmful materials at home, in school and in the community.
S5MT-la-b-1.5
II. Directions:
Group
the materials whether it is use at home, in school or in the community and
state if it is harmful or useful materials. Put a check (/) if the material is
useful or harmful.
III.
Direction: Classify if the materials is useful or harmful. Write your answer
before the number.
____________1. Muriatic acid
____________2.Rat killer
____________3. Cane sugar
____________4. Zonrox
____________5. Minola (cooking oil)
____________6. Soy sauce
____________7. Knife
____________8. Butter
____________9. Milk
____________10. Joy
____________11. Chlorine
____________12. Sanitizer
____________8. Butter
____________9. Milk
____________10. Joy
____________11. Chlorine
____________12. Sanitizer
IV.
Remember:
Materials
are considered useful when it serve a purpose.
Some
useful material may also bring hazards. These materials may bring to harm to
your health, environment and other organisms when not used properly.
Reference:
Science in You 5 page
5-9
Answers Key:
II.
HOME
|
SCHOOL
|
COMMUNITY
|
||||||
MATERIAL
|
USEFUL
|
HARMFUL
|
MATERIAL
|
USEFUL
|
HARMFUL
|
MATERIAL
|
USEFUL
|
HARMFUL
|
Condiment
|
/
|
book
|
/
|
Fertilizer
|
/
|
|||
Detergent
|
/
|
/
|
Black board
|
/
|
Hard liquor
|
/
|
||
Casserole
|
/
|
Paper
|
/
|
Cement
|
/
|
|||
Electric fan
|
/
|
Chalk
|
/
|
Cocaine
|
/
|
|||
Bed
|
/
|
Computer
|
/
|
/
|
Paint
|
/
|
/
|
|
Fuel
|
/
|
/
|
||||||
cigarette
|
/
|
|||||||
Paracetamol
|
/
|
/
|
||||||
III.
1. harmful
2. harmful
3. useful
4. harmful/ useful
5. useful
6. useful
7. harmful
8. harmful
9. useful
10. harmful/ useful
11. harmful
12. useful
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