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原子量:N～]4 O～16 Na～23 S～32 CI～山)往试管中滴加液体时,应将胶头滴管贴着试管35.5 n～137 内壁,以防液体滴到外面 一、单项选择题(共12分)9自来水生产中常通适量氯气进行杀菌消毒,氯 1.下列变化中,属于化学变化的是().气与水反应的产物之一是盐酸市场卜有些不法商贩 帆)
Atomic weight: N ~] 4 O ~ 16 Na ~ 23 S ~ 32 CI ~ Hill) When dropping the liquid into the test tube, the plastic dropper should be placed against the inner wall of the tube 35.5 n ~ 137 to prevent the liquid from dripping to the outside. Individual multiple-choice questions (12 points in total) 9 Normal tapping of chlorine in tap water production for disinfection, chlorine 1. The following changes are chemical changes (). One of the products of the reaction between water and water is the hydrochloric acid market. )