The Structure of the Atom. Section 4.1 Early Ideas About Matter Section 4.2 Defining the Atom Section 4.3 How Atoms Differ Section 4.4 Unstable Nuclei and Radioactive Decay. Click a hyperlink or folder tab to view the corresponding slides. Exit. Chapter Menu. Character quality confidence
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What animal is not afraid of any other animal?
Which of these makes a better grade luck, ability, other people, effort
30 minutes more time on homework = ½ grade point raise
theory: an explanation supported by many experiments; is still subject to new experimental data, can be modified, and is considered successful if it can be used to make predictions that are trueSection 4-1
I use marbles
model: a visual, verbal, and/or mathematical explanation of data collected from many experimentsSection 4-2
____ _____ _______
____ _____ charge _______
periodic table: a chart that organizes all known elements into a grid of horizontal rows (periods) and vertical columns (groups or families) arranged by increasing atomic number
atomic mass unit (amu)
The number of protons and the mass number define the type of atom.Section 4-3
Answers to problems on page 924
Do 14 page 101
Answers page 924
element: a pure substance that cannot be broken down into simpler substances by physical or chemical meansSection 4-4
Unstable atoms emit radiation to gain stability.Section 4-4
Chemistry alive field trip fusion and fission
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