Students look at two diagrams. The first shows iron nails in test tubes with boiled water or tap water, the second shows iron nails with moisture either present or absent. Students answer five questions about these investigations.
Students answer two questions about exercise times for an incrementing fitness programme. They identify an expression relating time exercised to the number of weeks on the programme, and explain why this pattern couldn't continue indefinitely.
This practical task has two parts. The first part of this practical requires students to observe the effects of different indicators on different substances. Students use these results to identify if some other substances are acid, alkali, or neutral.
This practical task consists of two parts. Students test various substances with hydrochloric acid, iodine solution, and universal indicator, and then complete a table with their observations. The second part requires students to identify four unknown solids using their tests and results from part one.
Students consider the potential for chemical change when a range of everyday substances are mixed. They use logical reasoning to work out the consequences of four pairs of reactions.
Task: Match everyday terms about properties with their meanings. Use their understanding about properties of paper and their uses to justify appropriate questions to investigate. Assessment focus: asking questions about paper properties.
Task: Create, use and identify ‘rules’ based on observable and/or measurable physical properties of common plastics. Assessment focus: classifying & identifying.
Students create a vignette with a focus on writing that is brief, descriptive, and set in one point in time. They should not be concerned with plot. As the emphasis is on quality rather than quantity, students need to show a controlled and elegant skill in writing, and to use figurative language to 'show' rather than 'tell'.
Students use problem-solving strategies to work out how to carry two men and two children across a river using one canoe. Students record their solution on a sheet provided.
Task: Predict, observe and explain what will happen when a balloon containing another balloon filled with water is thrown. Assessment focus: making and explaining predictions and observations.