Physical changes do not change the composition of a substance, only the physical properties.
Evidences of a
physical change include:
● Change in state of matter
○ When a substance changes from one state of matter to another (for example, changing
from solid to liquid, from liquid to solid, or from liquid to gas), the composition of the substance
remains the same.
○ Examples of change in state might include: melting of ice cream, hardening of melted
wax, or evaporating of water from wet clothes.
● Change in size or shape
○ When a substance changes in size or shape (for example, cutting, tearing, dissolving,
stretching, or wrinkling), its composition remains the same.
○ Examples of change in size or shape might include: shredding paper, dissolving sugar in
water, stretching a rubber band, wadding up a piece of paper, or denting a piece of metal.
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