Waves/Atomic Structure/Average Atomic Mass

A neutral atom of Carbon-13 has ________ electrons and _________ neutrons

• 13, 13
• 6, 7
• 7, 7
• 6, 6

Tags

NGSS.HS-PS1-1

Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses. 

• protons, neutrons
• protons, electrons
• neutrons, protons
• electrons, protons

Tags

NGSS.HS-PS1-8

The nucleus is ____________ charged whereas the electron cloud is ____________ charged. 

• negatively, positively
• negatively, negatively
• positively, positively
• positively, negatively

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Nitrogen has three occurring isotopes: Nitrogen-13, Nitrogen-14, Nitrogen-15. Which isotope is the most abundant?

• Nitrogen-13
• Nitrogen-14
• Nitrogen-15
• Based on the information given, it cannot be determined

The sum of the number of protons and the number of neutrons is called the _____

• atomic number
• mass number
• isotope number
• average atomic mass

Which subatomic particle has a positive charge?

• Proton
• Neutron
• Electron

Which subatomic particle has a negative charge?

• Proton
• Neutron
• Electron

Which subatomic particle is neutral?

• Proton
• Neutron
• Electron

Atoms of the same element with different numbers of neutrons are called

• Ions
• Isotopes
• Iotas
• Introns

Tags

NGSS.HS-PS1-8

The mass number of an isotope is equal to the number of ______ in an atom.

• Protons
• Neutrons
• Protons + Neutrons
•  Electrons