SI Units and Constants

What is the SI unit of time?

What is the SI unit of mass?

What is the unit of the Planck constant h?

What is the unit of the Boltzmann constant k?

What is the unit of electric current?

What is the unit of thermodynamic temperature?

Which of the following states of matter has the fastest movement of particles?

What is the result of heating a solid?

What is the characteristic of a solid in terms of volume and shape?

What happens when a gas is cooled?

What is the characteristic of a liquid in terms of shape?

What is the result of further cooling a liquid?

What is the SI unit of length?

What is the symbol for the SI unit of thermodynamic temperature?

What is the purpose of the prefixes in the SI system?

How many base units are there in the SI system?

What is the name of the conference that established the SI system?

What is the symbol for the SI unit of amount of substance?

SI Units

The SI unit of time is the second (s).
The SI unit of mass is the kilogram (kg).
The Planck constant (h) has the unit of joule second (Js).
The Boltzmann constant (k) is measured in joules per kelvin (J/K).
The unit of electric current is the ampere (A).
The SI unit of thermodynamic temperature is the kelvin (K).
The symbol for the SI unit of thermodynamic temperature is K.
The SI unit of length is the meter (m).
The symbol for the SI unit of the amount of substance is mole (mol).

Matter Properties

Among states of matter, gases have the fastest movement of particles.
Heating a solid typically results in expansion and a transition into a liquid state.
A solid maintains a definite shape and volume.
When a gas is cooled, it typically experiences contraction and may condense into a liquid.
Liquids take the shape of their container but have a definite volume.
Further cooling a liquid can lead to a transition into a solid state.

SI System

The SI system utilizes prefixes to denote multiples and submultiples, enhancing clarity and range in measurements.
There are a total of seven base units in the SI system.
The Conférence Générale des Poids et Mesures (CGPM) established the SI system.

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.