Discussion Overview
The discussion revolves around finding reliable sources for element properties such as density, melting point, and boiling point at standard conditions, specifically at 20 degrees Celsius and 1 atmosphere of pressure. Participants are exploring the consistency of these values across different periodic tables and the importance of noting the conditions under which they are reported.
Discussion Character
- Exploratory, Technical explanation, Debate/contested
Main Points Raised
- One participant is seeking a source that specifies the temperature and pressure for density, melting point, and boiling point values for elements.
- Another participant suggests that values are typically at standard temperature and pressure (STP) unless otherwise noted, but expresses surprise at the lack of consistent notation.
- A third participant provides a link to a periodic table found through a search, implying it may contain the desired information.
- Concerns are raised about the consistency of reported melting and boiling points, with one participant questioning whether the STP designation is consistently applied across all elements.
- One participant expresses confidence that unless stated otherwise, the values will be at STP, and mentions the possibility of checking the source material for verification.
Areas of Agreement / Disagreement
Participants express differing levels of confidence regarding the consistency of STP notation for various properties. While some believe that values are generally at STP, others question the reliability of this assumption across different sources.
Contextual Notes
There is uncertainty regarding the specific definitions of standard conditions used by different sources, and whether all periodic tables consistently indicate the conditions under which their values are reported.
Who May Find This Useful
This discussion may be useful for individuals working on projects involving chemical properties, such as software development for educational purposes, or anyone interested in the accuracy of elemental data in scientific contexts.