mari156
mari156 mari156
  • 18-05-2017
  • Chemistry
contestada

What is a physical change and how do you know it happened?

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Аноним Аноним
  • 18-05-2017
A physical change is when somebody smashes a computer screen. It's physical because the looks are changing of the computer. Hope this helps!
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sammytime2 sammytime2
  • 18-05-2017
A physical change is defined as "a usually reversible change in the physical properties of a substance,as size or shape" so its basically a change of a substance that you can see. You know a physical change has occurred if a substance has changed size or shape or in a way that you can physically see.
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