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Complete the statements by writing the number from the graph.

1. The substance is in the gas phase only in region _
.
2. The substance is in both the liquid and the solid phase in region _
.
3. The substance is in only the liquid phase in region _
.
4. The melting point is the temperature at region _
.
5. The boiling point is the temperature at region _
.

Complete the statements by writing the number from the graph 1 The substance is in the gas phase only in region 2 The substance is in both the liquid and the so class=

Respuesta :

Answer :

1. The substance is in the gas phase only in region 5.

2. The substance is in both the liquid and the solid phase in region 2.

3. The substance is in only the liquid phase in region 3.

4. The melting point is the temperature at region 2.

5. The boiling point is the temperature at region 4.

Explanation :

Melting or fusion : It is a type of process in which the phase changes from solid state to liquid state at constant temperature.

Freezing : It is a type of process in which the phase changes from liquid state to solid state at constant temperature.

Evaporation : It is a type of process in which the phase changes from liquid state to gaseous state at constant temperature.

Condensation : It is a type of process in which the phase changes from gaseous state to liquid state at constant temperature.

Sublimation : It is a type of process in which the phase changes from solid state to gaseous state without passing through the liquid state at constant temperature.

Deposition : It is a type of process in which the phase changes from gaseous state to solid state without passing through the liquid state at constant temperature.

pstnonsonjoku

The graph shown for the substance is called a heating curve. It shows the phase changes that occur as the temperature of a substance is gradually increased with time.

The substance is in the gas phase only in region 5

The substance is in both the liquid and the solid phase in region 2

The substance is in only the liquid phase in region 3

The melting point is the temperature at region 2

The boiling point is the temperature at region 4

In region 1, the substance is a solid. As the solid is heated, it begins to melt as shown by region 2. The melting point occurs within this region.

Across region 3, the substance is liquid. It begins to boil around region 4 and its boiling point occurs around this region. Inter-molecular forces are broken as the substance transits into the gaseous state represented by region 5.

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