SCIENCE 9th Grade First Trimester Study Guide 1.1 Everything is made of particles 1.2 Solids, liquids and gases 1.3 Particles in solids, liquids and gases 1.4 Closer look at gases 1.5 Mixtures, solutions and solvents 1.6 Pure substances and impurities 1.7 Separation methods (I) 1.8 Separation methods (II) 1.9 More about chromatography 2.1 Atoms, elements and compounds 2.2 More about atoms 2.3 Isotopes and radioactivity 2.4 How electrons are arranged
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Also practice on each subunit questions and concentrate on: Questions on Chapter 1 Questions on Chapter 2
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