Measurement, separation methods, criteria of purity, and tests for ions and gases.
Measurement and purity
Volume is measured with a measuring cylinder, pipette or burette; time with a stopclock; temperature with a thermometer; mass with a balance. A pure substance has a sharp, fixed melting/boiling point; impurities lower the melting point and raise the boiling point (and make them less sharp).
Viewing only
This content is free to read on superexams.com and cannot be printed or downloaded.
Read the full note, free
Create a free account to read this note in full. Every free account gets 2 complete revision notes, no card needed.