it is generally seen that, when a substance absorbs heat energy, its heating curve shows two plateaus. which…
it is generally seen that, when a substance absorbs heat energy, its heating curve shows two plateaus. which phenomenon is indicated by these plateaus? a melting b boiling c phase change d crystallization
Answer
Brief Explanations:
During a phase - change (like melting or boiling), the heat energy is used to break the intermolecular forces rather than increasing the temperature. So, the temperature remains constant during phase - change, resulting in plateaus on the heating curve. Melting and boiling are specific types of phase - changes, and crystallization is the opposite process of melting. The general phenomenon indicated by the plateaus is phase - change.
Answer:
C. phase change