What is an atom?

• The largest particle of a chemical element

• Both A and C

• The smallest particle of a chemical element

• All of the above

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Atoms always have the same number of what two atomic particles?

• Neutrons and neutrinos

• Neutrons and protons

• Electrons and protons

• Electrons and quarks

• Quarks and protons

What particle determines the atomic number of an atom?

• Neutron

• Quark

• Element

• Proton

• Nucleus

What characteristic of an element differs between isotopes?

• Mass

• Negative charge

• Positive charge

• Chemistry

• All of the Above

The number of what atomic particle varies between different isotopes of the same element?

• Quark

• Element

• Proton

• Neutron

Tags

NGSS.HS-PS1-8

In the isotope Carbon-14, what does the number 14 represent?

• The number of electrons

• Mass of the atom

• The total charge

• All of the Above

• None of the Above

Most elements only have 1 or 2 isotopes and several elements do not have any isotopes.

• True

• False

What is the name given to the element hydrogen when it has no neutrons?

• Protium

• Deuterium

• Tritium

• Does not exist

What is the center of the atom called?

• Neutron

• Proton

• Electron

• Nucleus

A Proton is a __________ charged particle.