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3 November, 13:52

How do you know that melting ice is a physical change?

Use words to describe what energy is

What type of energy causes a rain puddle to disappear on a sunny day?

A plumber uses a torch to heat a copper pipe in order to bend it. Is this an example of a physical change? Explain

Compare the properties of broken and unbroken glass. Explain why breaking glass is a physical change.

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Answers (2)
  1. 3 November, 15:50
    0
    How do you know that melting ice is a physical change?

    Because you're not adding another substance to the ice so the properties still remain the same of the ice, it's just changing it's form
  2. 3 November, 16:17
    0
    The last one:

    when the glass is broken, it's not changing into a new substance, just changing its form. so the only difference is the fact that they are broken or not
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