
J2_第1章(下)01
Authored by W.Y. Tan
Science
7th Grade
Used 8+ times

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15 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
保持化学性质的最小粒子是______________。
2.
FILL IN THE BLANK QUESTION
1 min • 1 pt
____________是化学变化中的最小微粒
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
分子、原子、离子都是构成物质的基本例子。下列由原子直接构成的是。。。。
氧气
石墨
氯化氢
氯化钠
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列物体的体积由小到大的排序正确的是。。。
原子核、质子、电子
质子、原子核、中子
电子、原子核、原子
原子、原子核、质子
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
分子与原子的本质区别在于。。。。。。。
分子是构成物质的一种微粒
在化学变化中分子可再分,原子不能再分
分子之间有空隙
分子在不停地运动着
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一种元素的原子变成离子,发生的变化是。。。。。。。。。
得到电子
失去电子
失去质子
可能得到电子,也可能失去电子
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水在化学变化中的最小粒子是。。。。。。。。
水分子
水原子
氢原子和氧原子
氢元素和氧元素
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