Page 3 - 新思维科学活动用书9 样章
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Contents
5 Reactivity 87
5.1 Reactivity and displacement reactions 87
5.2 Using the reactivity series and displacement reactions 93
5.3 Salts 96
5.4 Other ways of making salts 99
5.5 Rearranging atoms 105
6 Sound and space 113
6.1 Loudness and pitch of sound 113
6.2 Interference of sound 116
6.3 Formation of the Moon 122
6.4 Nebulae 126
6.5 Tectonics 129
7 Genes and inheritance 135
7.1 Chromosomes, genes and DNA 135
7.2 Gametes and inheritance 137
7.3 Variation 139
7.4 Natural selection 145
8 Rates of reaction 151
8.1 Measuring the rate of reaction 151
8.2 Surface area and the rate of reaction 158
8.3 Temperature and the rate of reaction 161
8.4 Concentration and the rate of reaction 167
9 Electricity 174
9.1 Parallel circuits 174
9.2 Current and voltage in parallel circuits 177
9.3 Resistance 182
9.4 Practical circuits 187
Acknowledgements 190
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