What does the atomic number signify?

The number of protons in an atom

The number of electrons in an atom

The number of neutrons + protons in an atom

The number of protons + electrons in an atom

Check all statements that are true:

The atomic number signifies which element an atom is part of.

Isotopes are atoms of an element that contain the same number of protons but a different number of neutrons in the nucleus.

The relative abundances of the isotopes of an element add up to 100.

Each isotope of an element has a different number of electrons.

Quiz

Holly Nephew 5 perguntas

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1What does the atomic number signify?
1. AThe number of electrons in an atom
2. BThe number of protons in an atom
3. CThe number of neutrons + protons in an atom
4. DThe number of protons + electrons in an atom
2If the number of electrons in an atom increases, so does its mass number.
1. AVerdadeiro
2. BFalso
3What is the unit used to measure atomic mass units?
1. Aimvu
2. Bamu
3. Cemu
4. Dno
4What is the percent abundance of an isotope whose relative abundance is 0.65?
1. A35%
2. B45%
3. C65%
4. D69%
5Check all statements that are true:
1. AThe relative abundances of the isotopes of an element add up to 100.
2. BEach isotope of an element has a different number of electrons.
3. CThe atomic number signifies which element an atom is part of.
4. DIsotopes are atoms of an element that contain the same number of protons but a different number of neutrons in the nucleus.

Descrição: A quiz on the aspects of atomic mass and isotopes.
Autor: Holly Nephew
Idioma: English
Visualizações: 227
Etiquetas: chemistry atomic number atomic mass isotopes general knowledge science chemistry 10th grade
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