Series 621: Ladybird Junior Science

Simple Chemistry

[Safety] The beginning of chemistry Chemists today Equipment for your chemistry laboratory Testing things The moving moth balls experiment What is carbon dioxide? Hard water Dissolving Evaporation Solutions Mixtures Unsaturated, saturated and supersaturated solutions Desert chemistry Crystals in nature Growing crystals A crystal garden Acids and alkalis Dyes Mordants Dyes and dyeing Paper and paint …

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Simple Mechanics

[Population and progress] The first machines The lever The shadoof The balance Making a see-saw balance Making a sensitive balance Making a straw balance Finding the balancing point What is gravity? Finding the centre of gravity of awkward shapes Tricks with gravity More about levers The inclined plane The wedge The pulley Cranes Lifts The …

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