Chemistry B (9-1) - Twenty First Century Science Suite J258 9-1: Ideas about Science Topical Past Paper Questions
OCR GCSE (9-1) Chemistry B (9-1) - Twenty First Century Science Suite J258 (9-1) past-paper questions on Ideas about Science, free. This topic is frequently examined across 6 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
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PET is a polymer made from crude oil. Most plastic water bottles are made from PET. A recycling process uses PET from waste bottles to make new polymers. These new polymers can be used to make fabric for clothing and other products. The diagram below shows the three stages involv…
Nina does a titration using dilute hydrochloric acid and dilute sodium hydroxide. She uses this apparatus. (a) Nina uses this method: Fill the burette with dilute hydrochloric acid. - Use a beaker to measure 25cm³ of dilute sodium hydroxide. • Add universal indicator to the dilut…
Kareem investigates the order of reactivity of five metals, aluminium, magnesium, calcium, copper and zinc. He does two experiments, as shown. Experiment 1 Experiment 2 In experiment 1 he puts small pieces of each of the metals into water. He observes the metals over five minutes…
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