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初三科学：上册第一章酸碱中和 (pg7)

Quiz by CHEW HOCK LEONG周福隆

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7 questions
Show answers
  • Q1
    将酸逐渐滴入锥形瓶中含有酚酞的碱溶液中，溶液逐渐从粉红色变成什么色？
    紫色
    无色
    红色
    蓝色
    Video
    30s
  • Q2
    逐渐将酸滴入锥形瓶的碱溶液中，锥形瓶内溶液pH值有何变化？
    降低
    保持不变
    升高
    30s
  • Q3
    酸与碱发生反应，产生盐和水的化学变化，称为什么反应？
    中和反应
    电解反应
    化合反应
    分解反应
    30s
  • Q4
    酸与碱中和时，溶液的温度是升高还是降低？
    升高
    降低
    30s
  • Q5
    酸碱中和是一个吸热反应还是一个放热反应？
    吸热反应
    放热反应
    30s
  • Q6
    氢氧化钠与盐酸混合发生中和反应，将生成什么？（请用中文名称回答）
    Users enter free text
    Type an Answer
    30s
  • Q7
    Users enter free text
    Type an Answer
    60s

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