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暂无描述。系统推荐的高质量记忆内容,适合每天坚持背诵学习。

卡片总数: 9内容版本: v3公开卡包更新时间: 8/1/2026

卡片预览 (9 张)

#1
正面 (问题)

What is the definition of a valence shell?

背面 (解答)

It is an Outer electron shell.

#2
正面 (问题)

Use the word “valence shell” in a sentence.

背面 (解答)

The electrons can be found on the valence shell.

#3
正面 (问题)

What is the definition of a polyatomic ion?

背面 (解答)

It’s two or more atoms that are covalently bonded together.

#4
正面 (问题)

Do ionic compounds dissolve in water?

背面 (解答)

Yes, they dissolve in water.

#5
正面 (问题)

Do covalent compounds dissolve easily in water?

背面 (解答)

No, they do not dissolve in water.

#6
正面 (问题)

Do ionic compounds conduct electricity when dissolved in water?

背面 (解答)

Yes, they do.

#7
正面 (问题)

Do covalent compounds conduct electricity when dissolved in water?

背面 (解答)

No, they don’t.

#8
正面 (问题)

Use “polyatomic ion” in a sentence.

背面 (解答)

An example of a polyatomic ion is OH.

#9
正面 (问题)

why is fluorine the most reactive non metal?

背面 (解答)

It always wants to gain electrons.