Question

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

Answer 1

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

Answer 2

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.