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chatpter 7.3 test

Authored by chen xiaoxu

Chemistry

6th Grade

Used 2+ times

chatpter 7.3 test
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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

化学方程式中,氯化钠的化学表达是什么?

NaCl2

NaCl

H2O

ClNa

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

二氧化碳的化学式是什么?

CO3

CO

CO2

O2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

化学方程式中,铁和硫的生成物是什么?

氧化铁

铁硫化物

硫酸铁

硫化铁

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

化学方程式中,铁的化学表达是什么?

Cu

Ag

Au

Fe

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

化学方程式中,硫的化学表达是什么?

H

O

S

He

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