我们可以从什么角度来区分物理变化和化学变化?

初三上 第一章

Quiz
•
Chemistry
•
7th - 9th Grade
•
Medium
YEE HANG余浩瀚
Used 632+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
自己的角度
有无新物质产生
物理性质与化学性质
从生理的角度
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
科学家把电离时生成的正离子全部为氢离子的化合物称为什么?
碱
苦
甜
酸
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列选项中哪个不属于“酸”的通性
酸可以使紫色石蕊试剂变红色
酸可以使无色酚酞变红色
酸可以跟碱反应产生盐和水
酸可以和某些金属反应生成盐和氢气
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
在酸的通性中,酸与某金属氧化物反应会生成下列何者?
盐+水
新的盐+新的酸
新的盐+新的碱
盐+氢气
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
盐酸是什么东西的水溶液?
氯化钾
氯化钙
氯化铵
氯化氢
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
暴露在空气中的浓盐酸具有什么性质?
会发亮
挥发性
会发现
挥挥手
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
硝酸银可以拿来检验下列哪些物质中有没有氯离子?
盐酸
碳酸钙
氯化钠
硫酸铜
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