Structure of Atoms

What is the charge and location of a neutron?

• Neutrons have a positive charge and are in the nucleus.

• Neutrons have no charge and are in the electron cloud.

• Neutrons have no charge and are in the nucleus.

• Neutrons have a negative charge and are in the nucleus.

What is the charge and location of an electron?

• Electrons have a positive charge and are in the electron cloud.

• Electrons have a negative charge and are in the nucleus.

• Electrons have a positive charge and are in the electron cloud.

• Electrons have a negative charge and are in the electron cloud.

Which particles are found in the nucleus? (Choose all that apply.)

• protons

• neutrons

• electrons

Which particles are found in the cloud around the nucleus?

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS1-1

Why does the nucleus of an atom always have a positive charge?

• The nucleus is positive because it contains protons.

• The nucleus is positive because it contains neutrons.

• The nucleus is positive because it contains electrons.

Tags

NGSS.MS-PS1-1

Neutral atoms have the same number of which two particles? (Choose two.)

• protons

• neutrons

• electrons

Tags

NGSS.MS-PS1-1

Which two subatomic particles have about the same mass? (Choose two.)

• protons

• neutrons

• electrons

Which subatomic particle has much less mas than the other two?

• proton

• neutron

• electron

How do you identify an element?

• By matching the number of protons to the atomic number

• By matching the number of neutrons to the atomic number

• By matching the number of electrons to the atomic number

What does an element's atomic number tell you?

• number of protons

• number of neutrons

• number of electrons