To understand the kinetic molecular descriptions of solids, liquids, and gases.

Question

To understand the kinetic molecular descriptions of solids, liquids, and gases.

The following table gives information about the behavior of molecules in solids, liquids, and gases.

Part B

Consider equal volumes (say 1 L) of a given substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass based on the trend for the average substance. If the mass difference between samples is relatively small (10%or less), rank the items as equivalent.

Rank from greatest to least mass. To rank items as equivalent, overlap them.

1L of substance in the solid phase, 1L of substance in the liquid phase, 1L of substance in the gas phase

Greatest Mass Least Mass

Part C

Match each description to the appropriate phase of matter.

A substance with a fixed volume and fixed shape

A substance with no fixed volume or shape

A substance with a fixed volume and no fixed shape

Solid Liquid Gas

Solid Liquid Gas Density high high low Molecular movement
(with respect to one another) minimally slow fast Compressibility and
thermal expansion fixed
volume fixed
volume variable
volume Do they expand to fill their container? no no yes Do they take the shape of their container? no yes yes

Explanation / Answer

Part-B

1 L of substance in the liquid state & 1 L of substance in the solid state are equal with having the greatest mass and 1 L of substance in the gas state is least becasue gas always has least mass.

Part-c

Match each description to the appropriate phase of matter.

A substance with a fixed volume and fixed shape---------Solid

A substance with no fixed volume or shape----------Gas

A substance with a fixed volume and no fixed shape -------Liquid

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