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6 December, 14:22

When a substance changes its state, all BUT ONE of these statements is true. That isA) Mass remains constant.

b. Only the form changes.

c. Kinetic energy changes.

d. Something new is formed.?

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Answers (2)
  1. 6 December, 14:30
    0
    Mass does remain constant. A is true.

    Only the form changes. (I take that means that a solid is different from a liquid) and that is also true.

    Kinetic energy changes. This one is kind of iffy. that means that the temperature will change. Temperature is a measurement of KE. If the change is so much as 1 degree or 1/2 a degree or a millionth of a degree, this is true. It's not very likeable though.

    The last one is false. Chemical reactions produce new things. State change only produces something going (say) from a liquid to a solid. There's nothing new being created.

    Answer D
  2. 6 December, 14:39
    0
    During a physical change, a substance changes form or state, matter or mass is conserved. Additionally, the kinetic energy of the particles can increase with heating or decrease with cooling. D) Something new is formed.
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