Econ

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Contents

|PART I PLANET EARTH | |Chapter 1 Fundamentals of chemistry | | |The scientific method |1 | |Kinetic theory of matter |2 | |Chapter 2 The atmosphere | | |A simple experiment to determine the percentage of oxygen in air |4 | |Chapter 3 Oceans | | |Folding filter paper in fluted form |6 | |PART II MICROSCOPIC WORLD I | |Chapter 5 Atomic structure | | |Alchemy atomic symbols and Dalton’s atomic symbols |8 | |What is an orbital? |9 | |Discovery of electron, proton and neutron |12 | |Chapter 7 Chemical bonding: ionic bonding | | |Evidence of ions from electrolysis |16 | |Chapter 9 Structures and properties of substances | | |Hydration of sodium chloride |19 | |Allotropy |20 | |PART III METALS | |Chapter 10 Occurrence and uses of metals | | |Alloys |21 | |Chapter 12 Reacting masses | | |Combustion analysis of organic compounds |23 |

PART IPLANET EARTH

Chapter 1Fundamentals of Chemistry

■ The scientific method
To study chemistry, we should have some ideas of how scientists work. Scientists work by following the scientific method (Figure S1.1):

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Figure S1.1 The scientific method.

1.Look for scientific facts by the observation of nature or experiments. (A scientific fact is an observation that is so consistently repeatable that there is no doubt about it.)...
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