What is the mass number ?

the number of protons and neutrons

the number of protons and electrons

To calculate the number of neutrons you should -

Subtract: Mass Number - Protons

Which of following shows where the sub-atomic particles can be found?

nucleus: neutron and proton electron shell: electron

nucleus: electron and proton electron shell: neutron

nucleus: neutron and electron electron shell: proton

which of the following is true about mass number?

mass number = number of protons + number of neutrons

mass number = number of protons + number of electrons

mass number = number of neutrons + number of electrons

Which of the following shows why an atom is neutral?

number of protons = number of electrons

number of protons = number of neutrons

number of electrons = number of neutrons

The following are representations of the element as seen in the Periodic Table . Calculate the number of protons, electrons and neutrons for each of the following atoms.

number of protons: 12 number of electrons: 12 number of neutrons: 12

number of protons: 12 number of electrons: 12 number of neutrons: 24

number of protons: 12 number of electrons: 24 number of neutrons: 12

number of protons: 12 number of electrons: 12 number of neutrons: 36

The following are representations of the element as seen in the Periodic Table . Calculate the number of protons, electrons and neutrons for each of the following atoms.

number of protons: 11 number of electrons: 11 number of neutrons: 12

number of protons: 11 number of electrons: 12 number of neutrons: 11

number of protons: 12 number of electrons: 11 number of neutrons: 12

number of protons: 12 number of electrons: 12 number of neutrons: 23

same number of protons, but the number of neutrons varies

same number of electrons, but the number of neutrons varies

only contains hydrogen and carbon

What quantities vary between isotopes of an element?

protons, electrons, and atomic mass

protons, electrons, and atomic number

which atom has 4 neutrons?

they have the same # of neutrons

1. What is Half-life?

The amount of time it takes for half the nuclei in a sample of the isotope to decay

The amount of time it takes for some of the nuclei in a sample of the isotope to decay

The amount of time it takes for half the electrons in a sample of the isotope to decay

the amount of time it takes to double the nuclei in a sample of the isotope to decay

Calculating Protons, Neutrons, Electrons and Isotopes

Authored by Kara Winter

Chemistry

8th - 11th Grade

NGSS covered

Used 655+ times

Calculating Protons, Neutrons, Electrons and Isotopes

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the atomic number of this nucleus?

Tags

NGSS.HS-PS1-8

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the atomic number of this atom?

none of the above

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the atomic number of this atom?

none of the above

Tags

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the atomic number of this atom?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which particle has a positive charge?

electron

orbital

proton

neutron

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Choose the particle that has no charge.

nucleus

neutron

proton

electron

MULTIPLE CHOICE QUESTION

1 min • 1 pt

An electron has a _____ charge.

negative

positive

neutral

Tags

NGSS.HS-PS2-4

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Calculating Protons, Neutrons, Electrons and Isotopes

What is the atomic number of this nucleus?

What is the atomic number of this atom?

What is the atomic number of this atom?

What is the atomic number of this atom?

Which particle has a positive charge?

Choose the particle that has no charge.

An electron has a _____ charge.

Which subatomic particle has a negative charge in the atom?

The atomic number of Hydrogen is

The atomic mass of hydrogen is

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