What is the mass number ?

the number of protons and neutrons

the number of protons and electrons

An atom has 5 protons, 6 neutrons, and 5 electrons. The element is labeled as Carbon. Which of the following is true about this atom?

The atom is actually Boron because it has 5 protons, not Carbon.

The atom is correctly labeled as Carbon because it has 6 neutrons.

The atom is an ion because it has 5 electrons and 6 protons.

The atom is correctly labeled as Carbon because it has 5 electrons.

Karson wants to build a model of a neutral iron atom with a mass number of 56. How many protons, electrons, and neutrons should she include in her model?

26 protons, 26 electrons, 30 neutrons

56 protons, 26 electrons, 30 neutrons

26 protons, 56 electrons, 30 neutrons

26 protons, 26 electrons, 56 neutrons

Makyhi created this model to represent a neutral boron (B) atom. Does Makyhi model represent the boron atom?

no, because the diagram does not have enough protons

no, because the diagram shows an unequal number of neutrons and electrons

yes, because the diagram has the correct number of protons

yes, because the diagram shows an equal number of protons and electrons

Taraji built a model to represent a neutral Beryllium (Be) atom. Does Taraji's model correctly represent the Beryllium atom?

No, because the model has the wrong number of neutrons.

Yes, because the number of protons and electrons match Beryllium's atomic number.

No, because the model has more electrons than protons

Yes, because the number of neutrons equals the number of protons

Which is FALSE about the nucleus? Click all that apply

It is the location of electrons

It is where the mass of the atom is found

It has an overall positive charge

Which of the following is TRUE about an electron?

located outside the nucleus, negative charge, and almost no mass

located in the nucleus, neutral charge, 1 amu

located outside the nucleus in the electron cloud, negative charge, 1 amu mass

located in the nucleus, negative charge, almost 0 mass

Waygrounds 5/20 PS.8.1.2

Authored by Alejandro Bassiouny

Chemistry

9th Grade

NGSS covered

Used 7+ times

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25 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What subatomic particles would you find in the nucleus of an atom?

Protons only

Protons and Neutrons

Neutrons and Electrons

Protons and Electrons

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which subatomic particles contribute the most to the mass of an atom?

Protons, Neutrons, Electrons

Protons only

Protons and Electrons

Protons and Neutrons

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Jabari finds an atom with an atomic number of 20 and a mass number of 40. How many protons, neutrons, and electrons are in a neutral atom of this element?

A. 20 protons, 20 neutrons, 20 electrons

B. 20 protons, 40 neutrons, 20 electrons

C. 40 protons, 20 neutrons, 20 electrons

D. 20 protons, 20 neutrons, 40 electrons

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

12 neutrons

12 electrons

12 protons

24 protons and neutrons

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The particles of the atom you can find by knowing the atomic number.

neutrons

protons and electrons

protons and neutrons

atomic mass

Tags

NGSS.MS-PS1-1

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Waygrounds 5/20 PS.8.1.2

What subatomic particles would you find in the nucleus of an atom?

Which subatomic particles contribute the most to the mass of an atom?

Jabari finds an atom with an atomic number of 20 and a mass number of 40. How many protons, neutrons, and electrons are in a neutral atom of this element?

If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

The particles of the atom you can find by knowing the atomic number.

The mass of one proton is greater than the mass of one...

Which letter represents a proton?

Which letter represents a neutron?

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