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WorksheetsPhase Changes in the States of Matter
Total questions: 11
Worksheet time: 10mins
Phase (a) is when a substance (b) from a solid, liquid, or gas state to a different state. Every (c) and substance can transition from one phase to another at a specific combination of (d) .
There are eight thermal processes through which matter can attain phase change. They are melting, freezing, evaporation, condensation, sublimation, deposition, ionization, and recombination. These eight phases exist under different temperatures and pressure conditions.
What are the phase changes between states of matter?
melting and freezing
evaporation and condensation
sublimation and deposition
ionization and recombination
all of the above
These processes: melting, freezing, evaporating, condensing, sublimation, and deposition are (a) and each transfers between phases differently.
Melting: The transition from the (a) to the (b) phase.
Freezing: The transition from the (a) phase to the (b) phase.
Evaporating: The transition from the (a) phase to the (b) phase
Condensing:The transition from the (a) phase to the (b) phase
Sublimation: The transition from the (a) phase to the (b) phase.
Deposition: The transition from the (a) phase to the (b) phase.
Temperature can change the phase of a substance. One common example is putting water in a freezer to change it into ice. In the picture, we have a solid substance in a container. When we put it on a heat source, like a burner, (a) is transferred to the substance increasing the (b) of the molecules in the substance. The temperature increases until the substance reaches its (c) . As more and more heat is transferred beyond the melting point, the substance begins to melt and become a liquid. This type of phase change is called an (d) because the pressure of the system stays at a constant level.
Deposition occurs when water vapor changes state directly from a (a) to a (b) . Deposition is the reverse of (c) . One example of deposition occurs (d) in the atmosphere where the temperature is very (e) . In these conditions, water vapor forms snow without becoming a liquid first.
