Answer
Yes, using changes in pressure.
Work Step by Step
A liquid boils when its saturated vapor pressure equals the external pressure. From Table 13–3, we see that the saturated vapor pressure of water at $20^{\circ}C$ is about 2330 Pa, or about 2.3 percent of normal atmospheric pressure.
If $20^{\circ}C$ water is placed in a vacuum chamber and the pressure is reduced to that value, the water will boil.
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