chatpter 7.3 test
Quiz
•
Chemistry
•
6th Grade
•
Practice Problem
•
Hard
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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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