Defining "simplest" would be key to giving you the answer that you want. I am going to assume that in this case simple means 'least structured'. That being the case, of the 3 common states of matter I would select GAS. Further, the simplest type of Gas would be Hydrogen, with the most basic elemental structure.
Matter refers to anything that has mass and occupies space, while substances are specific types of matter with uniform properties. Substances are made up of one type of atom or molecule, which distinguishes them from mixtures that have multiple types of particles. Substances can be classified as elements (composed of one type of atom) or compounds (composed of different atoms bonded together).
There are mainly four types of matter waves: de Broglie waves, matter-wave interference patterns, standing matter waves, and matter-wave tunneling. These waves are associated with the wave-particle duality of matter, demonstrating the wave-like characteristics of particles at the quantum level.
all types of matter conduct heat, just some do a worse job.
The three different types of waves are mechanical waves, electromagnetic waves, and matter waves.
Solid, Liquid, Gas, or Plasma are all different types of states of matter.
an element
"chemical"
The element hydrogen is the simplest atom and the most abundant in the universe. It is composed of one proton and one electron.
Correct answer= "Element" Element is the simplest type of matter; the basic unit from which all other matter is built
All types of matter have physical properties.
elemants
proton
The simplest organization of matter is an atom, which consists of a nucleus containing protons and neutrons, surrounded by orbiting electrons. Atoms combine to form molecules by sharing or transferring electrons.
An element is one of 115 on the periodic table. A liquid is made up of atoms, of a specific element, or compound of elements, loosely compacted together. There is gaps enough between the atoms, that they can slide past each other. In this case element is the simplest form of matter. However, an element is made up of one atom of that element, which contains protons, neutrons and electrons, specific to the elements placement on the periodic table. (Hydrogen is 1, therefore it has one proton and one electron. Further in, protons, electrons and neutrons can be comprised of quarks, neutrinos etc. but this is higher level physics and chemistry.
The simplest form of matter is an atom. Atoms are composed of protons, neutrons, and electrons.
If you mean the definition then, Matter is anything that has mass.
cells