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Pretest: Energy and Changes in Matter
Submit Test
Reader Tools
Temperature (°C)
100-
B
E
Select the correct answer from each drop-down menu.
The graph shows the heating curve of a chemical substance as it undergoes state changes from solid to liquid to gas. Analyze the curve, and answer
the questions.
The substance is entirely solid between positions
between positions
Particles of the substance are in the liquid state and are gaining kinetic energy

Sagot :

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