Papers 1 – 4 Chapter 1: Air and Water Chapter 2: Chemical Patterns Chapter 3: Chemicals of the Natural Environment Chapter 4: Material Choices Chapter 5: Chemical Analysis Chapter 6: Making Useful Chemicals Chapter 7: Ideas About Science ...
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These are video solutions for Paper 2 OCR (A) Chemistry A-level, June 2019 series. You can find the pdf of the model solutions, as well as the question paper and the mark scheme on ourOCR (A) Chemistry A-level Paper 2page.
网址:http://www.onmaths.com www.smartnotesonline 这个网站里有CIE考试局IGCSE复习笔记、历年真题、...