Exploring Atomic Structure and Mass Concepts

What particles are found in an atom?

• Protons and Electrons only

• Electrons and Neutrons only

• Protons and Neutrons only

• Protons, Neutrons, and Electrons

Tags

NGSS.MS-PS1-1

In isotope notation, what does the 'A' represent?

• Number of electrons

• Atomic mass

• Mass number

• Atomic number

What is the difference between atomic mass and mass number?

• Atomic mass is the number of protons, while mass number is the number of neutrons.

• Mass number is the sum of protons and neutrons, while atomic mass is the average mass of all isotopes.

• Atomic mass is the sum of protons and neutrons, while mass number is the average mass of all isotopes.

• Mass number is the number of protons, while atomic mass is the number of neutrons.

What is an isotope?

• An element with the same number of neutrons but different protons

• An element with the same number of neutrons but different electrons

• An element with the same number of protons but different neutrons

• An element with the same number of electrons but different protons

What does the atomic number (Z) represent?

• Number of neutrons

• Number of electrons

• Number of protons

• Number of isotopes

What is an ion?

• An element with a charge

• An element with no charge

• An element with the same number of protons and electrons

• An element with the same number of neutrons and electrons

Tags

NGSS.MS-PS1-5

How do you calculate the number of neutrons in an atom?

• Add the number of electrons to the mass number

• Subtract the number of electrons from the atomic number

• Add the atomic number to the mass number

• Subtract the atomic number from the mass number

If an atom has 34 protons, 45 neutrons, and 36 electrons, what is its charge?

• 1-

• 2+

• 2-

• 1+

What is a cation?

• An element with the same number of protons and neutrons

• An element with a positive charge

• An element with no charge

• An element with a negative charge

Tags

NGSS.MS-PS2-3

What does the 'amu' stand for?

• Atomic mass units

• Atomic neutron units

• Atomic number units

• Atomic weight units

Tags

NGSS.HS-PS1-7