http://www.ck12.org Chapter 13. States of Matter
- What would happen if you tried to make an ice rink using dry ice? Would you be able to skate? Compare the
phase diagrams of water and dry ice to justify your answer. - What would you see if you were to observe water at its triple point?
- Referring to the phase diagram of water, what phases can exist at a temperature of 0°C and a pressure of 0.006
atm? - Referring to the phase diagram for CO 2 , at what temperature must liquid CO 2 exist if the pressure is 100 atm?
- What temperature must carbon dioxide be in order to remain solid at 7 atmospheres of pressure? Would it
melt or sublime at this pressure?
Further Reading / Supplemental Links
- Observe the triple point of an organic compound, tert-Butyl alcohol: http://www.youtube.com/watch?v=B
LRqpJN9zeA - Materials and their properties: http://www.abpischools.org.uk/resources/solids-liquids-gases/index.asp
- Review on matter and change of state: http://www.chem4kids.com/files/matter_intro.html
Points to Consider
- Can you think of some substances commonly encountered in their gaseous state?
- How might you check for the presence of a gas?