学科竞赛
学科竞赛
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剥了 12 次
年级:其他
科目:百科
Hayley
2023-11-07
6 颗豆豆
1. 单选题
20 秒

Which of the following is an extensive property of matter?

Boiling point

Density

Volume

Melting point

2. 单选题
20 秒

What is the charge of an electron?

Positive

Negative

Neutral

It varies depending on the element

3. 单选题
20 秒

Which of the following is an extensive property of matter?

Boiling point

Density

Volume

Melting point

4. 单选题
20 秒

What is the charge of an electron?

Positive

Negative

Neutral

It varies depending on the element

5. 单选题
20 秒

What is the mass number of an atom?

The number of protons in an atom

The number of neutrons in an atom

The number of electrons in an atom

The total number of protons and neutrons in an atom

6. 单选题
20 秒

What is an isotope?

An atom with a different number of electrons than protons

An atom with a different number of protons than neutrons

An atom with a different number of neutrons than other atoms of the same element

An atom with a different number of protons than other atoms of the same element

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