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Sagot :
To understand which change of state has the wrong energy change listed, let's go through the correct energy changes associated with each state change:
1. Melting: When a substance melts, it changes from a solid to a liquid. This process requires the absorption of energy (heat) to break the bonds holding the solid structure together. Thus, the energy change for melting is a gain of energy.
2. Freezing: In freezing, a substance changes from a liquid to a solid. This process releases energy as bonds are formed to create the solid structure. Therefore, the energy change for freezing is a loss of energy.
3. Deposition: Deposition is the process where a gas changes directly to a solid without becoming a liquid first. This process releases energy since bonds are formed to create the solid structure. Hence, the energy change for deposition should be a loss of energy.
4. Condensation: When condensation occurs, a substance changes from a gas to a liquid. This process also releases energy as the gas particles lose kinetic energy and bonds form to create the liquid state. Thus, the energy change for condensation is a loss of energy.
Given Brian's table:
[tex]\[ \begin{tabular}{|l|l|} \hline \multicolumn{1}{|c|}{ Change of State } & \multicolumn{2}{c|}{ Energy Change } \\ \hline melting & gain \\ \hline freezing & lose \\ \hline deposition & gain \\ \hline condensation & lose \\ \hline \end{tabular} \][/tex]
It's clear that the energy change listed for deposition is incorrect. Deposition should be associated with a loss of energy, not a gain.
Thus, the change of state with the incorrect energy change listed is deposition.
1. Melting: When a substance melts, it changes from a solid to a liquid. This process requires the absorption of energy (heat) to break the bonds holding the solid structure together. Thus, the energy change for melting is a gain of energy.
2. Freezing: In freezing, a substance changes from a liquid to a solid. This process releases energy as bonds are formed to create the solid structure. Therefore, the energy change for freezing is a loss of energy.
3. Deposition: Deposition is the process where a gas changes directly to a solid without becoming a liquid first. This process releases energy since bonds are formed to create the solid structure. Hence, the energy change for deposition should be a loss of energy.
4. Condensation: When condensation occurs, a substance changes from a gas to a liquid. This process also releases energy as the gas particles lose kinetic energy and bonds form to create the liquid state. Thus, the energy change for condensation is a loss of energy.
Given Brian's table:
[tex]\[ \begin{tabular}{|l|l|} \hline \multicolumn{1}{|c|}{ Change of State } & \multicolumn{2}{c|}{ Energy Change } \\ \hline melting & gain \\ \hline freezing & lose \\ \hline deposition & gain \\ \hline condensation & lose \\ \hline \end{tabular} \][/tex]
It's clear that the energy change listed for deposition is incorrect. Deposition should be associated with a loss of energy, not a gain.
Thus, the change of state with the incorrect energy change listed is deposition.
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