Exam (elaborations)
OCR 2023 GCSE CHEMISTRY B TWENTY FIRST CENTURY SCIENCE J258/03: BREADTH IN CHEMISTRY (HIGHER TIER) QUESTION PAPER & MARK SCHEME (MERGED)
2 © OCR 2023 1 Argon forms 1% of the air and is unreactive. Argon is used as a replacement for nitrogen when nitrogen is too reactive. (a) Argon is unreactive because it is in Group 0 of the Periodic Table. State one other property of argon. .....................................................
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