Chemistry Section

Chemistry Section

9th Grade

38 Qs

quiz-placeholder

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お試し中

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43 Qs

Chemistry Section

Chemistry Section

Assessment

Quiz

Chemistry

9th Grade

Hard

Created by

Mary Chu

FREE Resource

38 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在室温下为液体的元素符号是:

Hg

Ag

Au

Ga

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

可能的相对原子质量:H-1 C-12 O-16 Na-23 Cl-35.5 K-39 Cu-64 22. 以下哪一项是纯物质?

河水

蒸馏水

矿泉水

盐水

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

在纸张生产中用作漂白剂的物质是:

氧气

漂白粉

活性炭

臭氧

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

可能的相对原子质量:H-1 C-12 O-16 Na-23 Cl-35.5 K-39 Cu-64 24. 以下哪一项是无机物质?

葡萄糖

淀粉

蔗糖

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

硼酸酐 (B2O3) 是制造耐热玻璃的原料。元素 (B) 在 B2O3 中的氧化态是:

+3

+2

-3

-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

与常用名称(俗名)相匹配的化学式是:

熟石灰:Ca(OH)2

蓝矾:CuSO4

三氧化二铁:FeCl2

纯碱:Na2CO3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

主要的能源来源是:

石油

煤炭

天然气

氢气

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