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初中化学

Authored by 麦尔丹 麦尔丹

Chemistry

6th - 8th Grade

Used 2+ times

初中化学
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

石榴是人们喜欢的水果,石榴中的铁指

分子

原子

离子

元素

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

钙的元素符号是

C

Ca

S

CO

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

地壳中含量最多的金属元素

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

海水中含量最多的元素是

H

O

Na

C

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

过氧化氢又名为

白开水

活氧水

双氧水

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