Hydrated sodium carbonate decomposes when heated in a Bunsen burner flame. Which equation shows this decomposition correctly? 5070_s16_qp_12 MCQ 2016 Paper 1, Variant 2 View
Which diagram correctly shows the arrangement of the ions in solid sodium chloride? 5070_w16_qp_12 MCQ 2016 Paper 1, Variant 2 View
Students proposed four cells to produce electricity in a school laboratory. Which cell would produce the largest voltage in a safe way? 5070_w22_qp_12 MCQ 2022 Paper 1, Variant 2 View