Cambridge Secondary (7-9). Stage 8. MCE Science. Student Book - Unit 4: The Structure of an Atom - Question 23

Table 4.2 shows six historical models: Dalton (1803), tiny indivisible balls; Thomson (1904), negative electrons embedded in positive material (called proton “soup” in the book); Rutherford (1911), a small heavy nucleus with electrons moving around it; Bohr (1913), electrons in shells; Schrödinger (1926), an electron cloud around the nucleus; Chadwick (1932), neutral neutrons as well as positive protons in the nucleus. These are simplified models, not exact pictures.

How are the models different?













Share your answers with the class.