Question

A sample of calcium carbonate is cooled. Which change happens to the molecules of calcium carbonate in the sample?(1 point)
Responses

The molecules vibrate more and weaken the forces.
The molecules vibrate more and weaken the forces.

The forces strengthen, and the molecule structure becomes more rigid.
The forces strengthen, and the molecule structure becomes more rigid.

The molecules break apart and then form stronger forces.
The molecules break apart and then form stronger forces.

The forces weaken, and the molecules move around.
The forces weaken, and the molecules move around.
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Answer 1

The forces strengthen, and the molecule structure becomes more rigid.

Cooling reduces the particles' kinetic energy so they vibrate less and the attractive forces hold them more tightly, making the solid more rigid.