SCIENCE 1113,01 April 2020 | Cambridge Lower secondary Checkpoint Past Papers with Mark Schemes

The exam covers biology, chemistry, and physics topics, focusing on cell structures, the life cycle of plants, and atomic structure. Key scientific principles include the reactivity series, sound wave properties, and aerobic respiration. Investigations explore magnet strength, enzyme activity, and displacement reactions. Practical applications involve light behavior through reflection, refraction, and shadow formation. Questions emphasize material properties, energy transformations, and scientific inquiry. Keywords: biology, chemistry, physics, STEM education, cell structure, reactivity series, photosynthesis, enzyme activity, sound waves, light behavior, energy transformations, practical science skills.