Bromine melts at -7\ ^\circ\text{C} and boils at 59\ ^\circ\text{C}. A sample of bromine is cooled from 20\ ^\circ\text{C} to -15\ ^\circ\text{C}. Which statement about the arrangement of its particles before and after cooling is correct?

Particles are far apart at both temperatures.

Particles are closely packed and fixed at both temperatures.

Particles are close together but random at 20\ ^\circ\text{C}, and closely packed in fixed positions at -15\ ^\circ\text{C}.

Particles are far apart at 20\ ^\circ\text{C}, and close together at -15\ ^\circ\text{C}.

CH-588

States of matter

Chemistry · Secondary 3 · Hard · States of matter

Bromine melts at

-7\ ^\circ\text{C}

and boils at

59\ ^\circ\text{C}

. A sample of bromine is cooled from

20\ ^\circ\text{C}

-15\ ^\circ\text{C}

.

Which statement about the arrangement of its particles before and after cooling is correct?

Particles are far apart at both temperatures.
Particles are closely packed and fixed at both temperatures.
Particles are close together but random at $20\ ^\circ\text{C}$ , and closely packed in fixed positions at $-15\ ^\circ\text{C}$ .
Particles are far apart at $20\ ^\circ\text{C}$ , and close together at $-15\ ^\circ\text{C}$ .

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