Please enable JavaScript.
Coggle requires JavaScript to display documents.
ATOM - Coggle Diagram
ATOM
Models
-
the plum pudding model is define by electrons surrounded by a volume of positive charge, like negatively charged "plums" embedded in a positively charged "pudding".
envisioned the atom as a miniature solar system, with electrons orbiting around a massive nucleus, and as mostly empty space, with the nucleus occupying only a very small part of the atom.
-
-
discover that electrons travel in separate orbits around the nucleus and that the number of electrons in the outer orbit defines the properties of an element.
-
In this model, atoms had their mass and positive electric charge concentrated in a very small nucleus.
-
proposes that electrons are almost as much like a wave of energy as they are like particles. They're moving so fast that they're not really in any one place or region at any given time, and they keep changing their path in response to the fields around them.
-
-
-
-
-
-
Structure
-
It is a subatomic particle, with a positive electric charge of and a mass slightly less than that of a neutron.
-
these are the subatomic particles that orbit the nucleus of an atom. They are generally negative in charge and are much smaller than the nucleus of the atom
A subatomic particle, which has a neutral charge, and a mass slightly greater than that of a proton.
-
-
English chemist and meteorologist, is credited with the first modern atomic theory based on his experiments with atmospheric gases.
-
is the simplest of all atoms: it consists of a single proton and a single electron. In addition to the most common form of the hydrogen atom that is called protium, two other isotopes of hydrogen exist: deuterium and tritium.
-
-
-
-
-
-
Concepts
-
Democritus believed that atoms were uniform, solid, hard, incompressible, and indestructible and that they moved in infinite numbers through empty space until stopped.
-
he believed in four elements: earth, air, fire, and water.
-
Democritus, he proposed the Greek word atomos, which means uncuttable. And so as he explained, all matter was eventually reducible to discrete, small particles or atomos
Democritus had a theory for this, that mind consists of “soul atoms,” extremely small and mobile atoms that create copies or images of the larger ones, becoming our perceptions and thoughts.
-
-
The key process of electrolysis is the interchange of atoms and ions by the removal or addition of electrons to the external circuit.
-
-
-
-
-
