Chapter 4 The Structure of the Atom.pdf

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The Nucleus (cont.) • Rutherford refined the model to include positively charged particles in the nucleus called protons. • James Chadwick received the Nobel Prize in 1935 for discovering the existence of neutrons, neutral particles in the nucleus which accounts for the remainder of an atom’s mass.
The Nucleus (cont.) • All atoms are made of three fundamental subatomic particles: the electron, the proton, and the neutron. • Atoms are spherically shaped. • Atoms are mostly empty space, and electrons travel around the nucleus held by an attraction to the positively charged nucleus.
Page 2 and 3: The Structure of the Atom Section 4
Page 4 and 5: Section 4.1 Early Ideas About Matte
Page 6 and 7: Greek Philosophers (cont.) • Demo
Page 8 and 9: Greek Philosophers (cont.) • John
Page 10 and 11: Section 4.1 Assessment Who was the
Page 13 and 14: Section 4.2 Defining the Atom • D
Page 15 and 16: The Atom • The smallest particle
Page 17 and 18: The Electron (cont.) • This figur
Page 19 and 20: The Electron (cont.) • In the ear
Page 21 and 22: The Electron (cont.) • Matter is
Page 23 and 24: The Nucleus (cont.) • Although mo
Page 25: The Nucleus (cont.) • The repulsi
Page 29 and 30: The Nucleus (cont.) • Chemical be
Page 31: Section 4.2 Assessment What are the
Page 34 and 35: Section 4.3 How Atoms Differ (cont.
Page 36 and 37: Isotopes and Mass Number • All at
Page 38 and 39: Isotopes and Mass Number (cont.)
Page 40 and 41: Mass of Atoms (cont.) • The atomi
Page 42: Section 4.3 Assessment Elements wit
Page 45 and 46: Section 4.4 Unstable Nuclei and Rad
Page 47 and 48: Radioactive Decay • Unstable nucl
Page 49 and 50: Radioactive Decay (cont.) • The f
Page 51 and 52: Radioactive Decay (cont.)
Page 53 and 54: Radioactive Decay (cont.) • Atoms
Page 55: Section 4.4 Assessment Why are radi
Page 58 and 59: Key Concepts Section 4.1 Early Idea
Page 60 and 61: Key Concepts Section 4.3 How Atoms
Page 62 and 63: Whose work led to the modern atomic
Page 64 and 65: Two isotopes of an unknown element
Page 66 and 67: What happens when an element emits
Page 68 and 69: How many neutrons, protons, and ele
Page 70 and 71: What is the densest region of an at
Page 72: Click on an image to enlarge.
Page 91 and 92:
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