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Atoms - Coggle Diagram
Atoms
Component of Atom
Proton
Mass: 1
Position: Nucleus
Charge: +1
Neutron
Mass: 1
Charge: 0
Position: Nucleus
Electron
Mass: 1/2000
Charge: -1
Position Energy levels (Outside of nucleus)
The Meaning of Sub-atomic particles
Proton
Defines the element of an atom, which is the atomic number (same as the number of protons)
Example: a Oxygen atom has 8 protons, therefore it has an atomic number of 8
Neutron
Defines the type of isotope. Isotopes can differ in chemical properties, but always has the same number of proton and neutron
Example: U-235 and U-238 both contain 92 proton and electron, but has different number of neutron
Electron
Defines the charge of an atom. Losing an electron gives you a positive ion (cation), obtaining an electron gives you a negative ion (anion)
Example: an atom that has 7 protons and 10 electrons have a charge of -3
Thomson Pudding Model
Negative electrons embedded on a positive nucleus
Advantages
Contains the charge of the nucleus and the electron.
Described the position of the atom (though it is not correct)
Give the size comparison of the nucleus and electron
Disadvantages
Did not continue to break up the nucleus
Other knowledge+Vocabulary
Vocabulary
Proton
Neutron
Electron
Energy Level
Element
Isotope
Charge
Ion
Atomic Number
Mass Number
Element Symbol
Plum Pudding Model
Electrostatic Force
Analogy
Other knowledge
Nucleus attract electrons using electrostatic force
Nucleus takes up nearly all the mass of an atom, but nearly no volume.
A neutral atom has the same number of protons and electrons
Only 2 electrons can appear on the innermost energy level