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Rare earth metals
Picric acid: a brief description of the substance
Acidic oxides: a brief description of the group
Preparation of methane in the home and in laboratory conditions
Thermal phenomena - they are all around us
Classification of chemical reactions
What is FM
Types of isomerism of organic compounds
Copper ore.
Carbon dioxide.
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Saturated steam and its properties
Methods of Economic Research
Exact science - what are they
