Chapter 1 - Experimental chemistry Flashcards
Content covered in chapter 1: - SI units - Apparatus and its uses - Methods of collecting gas - Separation techniques
Physical quantities and the SI units of it?
s (seconds)
kelvin (K)
metre (m)
kilogram (kg)
cubic metre (m^3)
What is the degree of accuracy of a burette?
To the nearest 0.05
What is the degree of accuracy of a pipette?
Accurate fixed volumes which are smaller like 10.0
What is the degree of accuracy of a measuring cylinder?
To the nearest 0.5
What is the degree of accuracy of a volumetric flask?
Accurate fixed volumes which are bigger like 100
Where should we position our eyes when reading the volume of a liquid? Why?
At the meniscus to avoid parallax error
State all of the gas collection methods
Upward delivery, downward delivery and water displacement
Characteristics of upward delivery?
Gas is less dense than air
Characteristics of downward delivery?
Gas is denser than air
Characteristics of water displacement?
Gas is insoluble to slightly soluble
