Question 21
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.
Work in groups. Look at the different scientific models of an atom in Table 4.2. Compare the models.
Share your answers with the class.
Work in groups. Look at the different scientific models of an atom in Table 4.2. Compare the models.
Share your answers with the class.
