Exam code: 0653
A sample of a substance has a definite shape and a definite volume.
The substance changes state. The sample now has no definite shape but still has a definite volume.
What is the name of the change of state?
condensation
evaporation
freezing
melting
Was this exam question helpful?
Fig. 9.1 shows the arrangements of particles in ethanol and sulfur at a temperature of 25 °C.
Fig. 9.1
Use Fig. 9.1 and information from Table 9.1 to state which diagram, X or Y, shows the structure of ethanol and of sulfur at 25°C.
Explain your answer in terms of particles.
ethanol: ..................
sulfur: ..................
explanation: ..................
Was this exam question helpful?