contestada

Which of the following is TRUE about a physical change in matter?
O A physical change changes the identity of the substance
O A physical change does not change the chemical formula of the substance
O A physical change has similar characteristics as a chemical change.
A physical change is a change in how the substances react with other substances.

Respuesta :

Answer:

B.  a physical change does not change the chemical formula of the substance

Explanation:

Physical change does not change the substance or identity of an object

The correct answer is physical change does not change the chemical formula of the substance.

What is a physical change?

  • A physical change is one in which only the physical state of matter is altered.
  • Its chemical characteristics have not changed.
  • A physical change is usually brought about by increasing the temperature or exerting pressure, or both.
  • The original state of matter is restored by reversing the condition, that is, lowering the temperature, lowering the pressure, or both.
  • Physical changes, in other words, are reversible.

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