Purity
Chemistry: Edexcel IGCSE, topic 2.1.4
Effects of Impurities in a Sample
Chemically pure substances have exact and specific melting and boiling points. Adding impurities will widen the range of temperatures at which the sample melts or boils.
Decreases melting point
Increases boiling point
Increases range of temperatures
- Increases the range of temperatures at which the sample melts or boils.
Test yourself on Purity
More impurities in a sample will...
What does it mean if a solid melts over a range of temperatures, instead of at one exact point?
How do impurities affect the melting and boiling points of samples?