To determine which conclusion is best supported by the data, we'll carefully analyze the temperatures of each substance and compare them accordingly. Here's a step-by-step breakdown:
1. Review the temperatures of the substances:
- Substance W: 12°C
- Substance X: 18°C
- Substance Y: 9°C
- Substance Z: 20°C
2. Evaluate each conclusion based on the given temperatures:
- Conclusion 1: The particles in substance W have a greater average kinetic energy than the particles in substance Z.
- Temperature of W: 12°C
- Temperature of Z: 20°C
- Since the temperature of W is less than the temperature of Z, this conclusion is False.
- Conclusion 2: The particles in substance X have a greater average kinetic energy than the particles in substance Z.
- Temperature of X: 18°C
- Temperature of Z: 20°C
- Since the temperature of X is less than the temperature of Z, this conclusion is False.
- Conclusion 3: The particles in substance W have a lower average kinetic energy than the particles in substance X.
- Temperature of W: 12°C
- Temperature of X: 18°C
- Since the temperature of W is less than the temperature of X, this conclusion is True.
- Conclusion 4: The particles in substance Z have a lower average kinetic energy than the particles in substance Y.
- Temperature of Z: 20°C
- Temperature of Y: 9°C
- Since the temperature of Z is greater than the temperature of Y, this conclusion is False.
3. Final determination:
- Conclusion 1: False
- Conclusion 2: False
- Conclusion 3: True
- Conclusion 4: False
Hence, based on the given temperatures, the best-supported conclusion is: The particles in substance W have a lower average kinetic energy than the particles in substance X.
