one of them is weather
Some good effects of physical changes: Material or substance remains unchanged, Castings, Sculptures, Shaping of metals, Shaping of stones for building, Polishing of metals and stones.
No. It is a physical change.
helps a lot
Physical change
A physical change would be a change in a physical property. A "physical property", by itself, may or may not change.
Molecules permanently change. In a physical change the effects are reversible.
because
good effect of these chemical change and physical change in our enviroment
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because you are a old me is a kid
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There are many harmful effects of physical change. Some of these things mean that the items no longer fit where the need to.
give examples of physical and chemical change
rock
no useful effects
Free energy
both, every chemical change causes a physical change, or the effects would not be apparent or even noticeable.