Changes
that Materials Undergo
I. Learning Competency: Investigate
changes that take place under the following conditions.S5MT-Ic-d-2
LO2.2:
Identify
the characteristics of physical and chemical change.
S5MT-lc-d-2.2
II. Directions:
Identify the following as
physical (P) or chemical (C) changes and give the characteristics of
each, what makes it physical and chemical changes. Choose the characteristics
on the box below.
III.Identify the kind of change happen in each item. Write PHYSICAL CHANGE or CHEMICAL CHANGE.
_______________1. Breaking of glass
_______________2. Cement mixed with water
_______________3. Chewing a biscuit
_______________4. Chopping a wood
_______________5. Digesting food
_______________ 6. Melting ice cream_______________ 7. Pounding metal
_______________ 8. Drying of leaves
_______________ 9. Spoiling milk
_______________ 10. Trimming of hair
IV. Generalization:
Physical changes do
not lead to the formation of new substance.
As material undergoes a physical change, its physical properties like
size shape and phase are usually change.
Chemical change one or more
substances at times react with one another. This consequently leads to the formation
of a new substances, the formation of a new substance accompanied by a.
emission of heat, absorption of heat, emission light, production of sound and
emission of gas.
References:
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