217. Which of the following statements about thermal motions is correct?
It includes rotational and vibrational motions of molecules.
Transitional motions are observed in all states of matter.
At a certain temperature, the distribution of vibrational energy of particles of a substance is equal.
The average thermal motions of a sample of matter are reported as the temperature of that sample.
(1) 1 (2) 2 (3) 3 (4) 4
\textbf{217.} Which of the following statements about thermal motions is correct?
\begin{itemize}
\item It includes rotational and vibrational motions of molecules.
\item Transitional motions are observed in all states of matter.
\item At a certain temperature, the distribution of vibrational energy of particles of a substance is equal.
\item The average thermal motions of a sample of matter are reported as the temperature of that sample.
\end{itemize}
(1) 1 \hfill (2) 2 \hfill (3) 3 \hfill (4) 4
\medskip