18 Questions
What is the SI unit of time?
second
What is the SI unit of mass?
kilogram
What is the unit of the Planck constant h?
Js
What is the unit of the Boltzmann constant k?
JK–1
What is the unit of electric current?
A
What is the unit of thermodynamic temperature?
K
Which of the following states of matter has the fastest movement of particles?
Gas
What is the result of heating a solid?
It changes to a liquid
What is the characteristic of a solid in terms of volume and shape?
It has definite volume and shape
What happens when a gas is cooled?
It changes to a liquid
What is the characteristic of a liquid in terms of shape?
It takes the shape of the container
What is the result of further cooling a liquid?
It changes to a solid
What is the SI unit of length?
metre
What is the symbol for the SI unit of thermodynamic temperature?
K
What is the purpose of the prefixes in the SI system?
To indicate the multiples or submultiples of a unit
How many base units are there in the SI system?
7
What is the name of the conference that established the SI system?
Conference Generale des Poids et Measures
What is the symbol for the SI unit of amount of substance?
mol
Test your knowledge of the definitions of SI units, including the meter, kilogram, and second, as well as fundamental constants like the speed of light and Planck's constant. Understand how these units are defined in terms of each other and the underlying physical constants.
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