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S2w5 Wednesday Bellringer - phase change diagrams

Last updated 3 months ago
2 questions
1
The phase diagram below represents the phase diagram for an unknown substance. If you have no idea how to read this, ask your neighbor, especially the 8th graders and honors students.
One atmosphere pressure at sea level is 100 kpa, and assume the temperature is 0° C. Find the point on the graph that corresponds to that temperature and pressure. What region of the graph are you in?__________
If you were to keep the temperature the same, but increase the pressure, what would phase would the substance become at 100,000 kpa? __________
If you were to drop the pressure back down to 100 kpa, and then drop the temperature to -100°C, what phase would the substance become?__________
1

Can you give an example of when something goes from being a gas straight to be a solid without becoming a liquid first?