The 5 Scientists
This scientist proposed the "Solid Sphere" model, stating that all matter is made of indivisible atoms...
Who is John Dalton?
Thomson used this lab tool when he observed a beam of light bend toward a positive plate, proving negative charges exist...
What is the Cathode Ray Tube?
This subatomic particle has a positive charge, resides in the nucleus, and determines an element's identity...
What is a proton?
This is what we call an atom that has gained or lost electrons and now carries an overall positive or negative charge...
What is an ion?
J.J. Thomson discovered the first subatomic particle (the electron) and named his model this name...
What is the plum pudding model?
This unexpected result during the Gold Foil experiment surprised Rutherford and proved the nucleus was extremely small and dense...
What are alpha particles bounce almost straight back?
This is where almost all the mass of an atom concentrated, and these two subatomic particles account for that mass...
What is the nucleus and the protons and neutrons?
What is a +1 ion?
This scientist proposed that electrons orbit the nucleus in fixed, discrete energy levels (shells)...
Who is Niels Bohr?
This observation led Rutherford to conclude that atoms are composed mostly of empty space...
How do most alpha particles passed straight through the gold foil without deflecting?
This is the maximum electron capacities for the 1st and 2nd energy shells in a Bohr model...
What are 2 and 8 electrons?
This is the charge for a neutral atom that has lost 2 electrons...
What is a +2 charge?
This Austrian physicist developed the mathematical equations that led to the modern Electron Cloud (Quantum) Model...
Who is Erwin Schrödinger?
This is the order of all 5 models in the chronological order...
What are the Solid Sphere -> Plum Pudding -> Nuclear/Gold Foil -> Bohr -> Electron Cloud models?
This is a Bohr model sketch for a neutral Carbon-12 atom (6 protons, 6 neutrons 6 electrons)...
Answers will vary
This is why gaining an electron will make the atom negatively charged instead of positively charged...
Why do electrons have a negative charge that makes the overall atom more negative?
This scientist performed the famous Gold Foil experiment that completely disproved Thomson’s Plum Pudding model...
Who is Ernest Rutherford?
This is how the Electron Cloud Model describes electron paths differently than Bohr’s model...
Why don't electrons don't travel in fixed circular tracks; they exist in 3D regions of high probability (orbitals)?
This is why don't negatively charged electrons crash directly into the positively charged nucleus...
Why do they have enough energy to continue flying around the nucleus without touching?
A neutral Nitrogen (originally has 7 protons) gains 3 electrons and now has this many electrons...
What are 10 electrons?