John Dalton thought that atoms were like little marbles, and also studied how elements combine to form compounds.
See http://www.rsc.org/chemsoc/timeline//pages/1911.html
and http://www2.slac.stanford.edu/vvc/nobel/rutherford.html.
Rutherford theorized that an atom is uniformly dense
Democritus (460-370 BCE) originally in Greece, then Dalton (1766-1844 CE) reinforced it.
John Dalton (2025)
John Dalton
John Dalton
John Dalton
jon dalton
He stated that all matter was made of tiny and unbreakable particles called atoms. This theory was revise because various scientists have discovered the subatomic particles (J.J. THomson discovered the electron, James Chadwick discovered the neutron etc.). Scientists have also found that atoms can undergo nuclear decay. We also know the structure of an atom is not just a solid ball.
Democritus, an ancient Greek philosopher, was the first person to introduce the idea of an atom. He proposed that all matter is made up of tiny indivisible particles called atoms. Democritus' atomic theory laid the foundation for the modern understanding of atoms.
A tiny Particle is Called an Atom.
I have no idie
Thomson believed about atoms, that : An atom consists of a sphere of positive charge with negatively charged electrons embedded in it. Positive and negative charges in an atom are equal in magnitude, thus an atom is electrically neutral and it has no overall + or - charge.
John Dalton
No , because in everything is made out of atoms. even us humans. Atoms are tiny masses and there always moving . now solids are still. therefore, can it be a solid?by shallie asembo and Gary Robert
Democritus, a Greek scholar, actually proposed the theory of tiny particles called atoms, but they weren't actually discovered by him but by a man by the name of John Dalton in the late 1700s.
Dalton theorized that an atom was a tiny solid sphere. Today we know that atoms are not solid, in fact are mostly open space.
Dalton's atomic model simply stated that all elements were made of tiny atoms, he said nothing about the structure of those atoms. Rutherford proposed that most of the mass of the atom is concentrated in a tiny central nucleus with positive charge.
Around 400 BC Democritus a Greek philosopher theorized that everything was composed of small indivisible particles he called atoms or "atomos".
The same particles of matter that make up a solid are also the same particles of matter that make up a gas or a liquid. Basically matter consists of atoms. At the simplest level, the particles of atoms are electrons, protons and neutrons.
matter is anything that takes up space and has mass.It can be solid,liquid,or gas.The building blocks of matter are tiny particles called atoms.
atoms
Dalton proposed that atoms in an element are tiny, hard and identical spheres, just like billiard balls. He also thought of them as indestructible, but they arrange in reactions though. He couldn't explain attraction or repulsion.
Glomerulus- tiny ball of capillaries(microscopic blood vessels) in the kidney.
Democritus believed that matter was made up of tiny, indivisible particles called atoms. These atoms were eternal and unchanging. Democritus also proposed that different physical properties and interactions among atoms resulted in the variety of substances we observe in the world.