Quiz: The Atom and Its Structure

What is an atom?

• The smallest unit of a chemical element

• A molecule made of compounds

• A cluster of electrons

• A charged particle

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

What are the three subatomic particles in an atom?

• Protons, neutrons, photons

• Protons, neutrons, electrons

• Electrons, ions, photons

• Protons, electrons, isotopes

Where are protons and neutrons located in an atom?

• Electron cloud

• Nucleus

• Valence shell

• Energy levels

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NGSS.HS-PS1-8

What is the charge of a proton?

• Positive

• Negative

• Neutral

• No charge

What is the charge of an electron?

• Positive

• Negative

• Neutral

• No charge

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• No charge

Which particle determines the identity of an element?

• Proton

• Neutron

What is an isotope?

• An atom with extra electrons

• An atom with a different number of neutrons

• An atom with a different number of protons

• An atom that has lost a proton

What does the atomic number represent?

• The number of electrons

• The number of neutrons

• The number of protons

• The mass of the atom

What does the mass number of an atom represent?

• Protons + neutrons

• Protons + electrons

• Electrons + neutrons

• Protons + neutrons + electrons

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-8