Front

Back

It is a liquid because the volume is fixed, and the shape changes.

Front

Back

Figure 1; the particles are tightly packed.

Front

Back

The student is correct because a solid has a fixed shape and volume.

Front

Back

Observation 3

Front

Back

The mass of the water in Beaker 2 is greater and the temperature is warmer than the water in Beaker 3.

Front

Back

Solid

Front

Back

Substance 1 should be classified as a gas, and Substance 3 should be classified as a liquid because the volume of a liquid is fixed.

Front

Back

The substance is a gas because its shape and volume are indefinite.

Front

Back

The water in Glass W is warmer than the water in Glass Z.

Front

Back

increased evaporation and decreased precipitation