Chapter 4 The Structure of the Atom.pdf

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The Nucleus (cont.) • Rutherford concluded that atoms are mostly empty space. • Almost all of the atom's positive charge and almost all of its mass is contained in a dense region in the center of the atom called the nucleus. • Electrons are held within the atom by their attraction to the positively charged nucleus.
The Nucleus (cont.) • The repulsive force between the positively charged nucleus and positive alpha particles caused the deflections.
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: The Nucleus (cont.) • Although mo
Page 27 and 28: The Nucleus (cont.) • All atoms a
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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