Atoms & Isotopes (Ch 9 L2)

Determine the number of protons and neutrons for the isotope depicted in the nuclide symbol.

• 35 protons and 0 neutrons

• 18 protons and 17 neutrons

• 17 protons and 35 neutrons

• 17 protons and 18 neutrons

Tags

NGSS.MS-PS1-1

Suppose you are a chemist studying two atoms for possible use in treating cancer. The one atom has more neutrons than the other but they both have the same number of protons. What's another definite difference between the atoms?

• Atomic Number

• Mass Number

• Radioactivity

• Number of electrons

These particles exist outside the nucleus.

• Electrons

• Protons

• Neutrons

• Quarks

What is represented by the equation?

• Alpha Decay

• Beta Decay

• Gamma Radiation

• Pie Decay

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is represented by the equation?

• Alpha Decay

• Beta Decay

• Gamma Decay only

• Tooth Decay

What is the mass and identity of an atom with 8 protons and 10 neutrons?

• 2, Helium

• 18, Argon

• 18, Oxygen

• 18, Neon

• 8, Oxygen

Tags

NGSS.MS-PS1-1

Which two subatomic particles have approximately the same mass?

• protons and electrons

• protons and neutrons

• neutrons and electrons

• They all have different masses.

Sometimes an unstable nucleus releases energy to go from an excited state to a ground state (lower energy). This release of energy is called ____________ radiation.

• Gamma

• Beta

• Alpha

• Ultraviolet

Tags

NGSS.HS-PS1-8

Atoms with the same number of protons but a different number of neutrons will have the same

• Atomic Number.

• Mass Number.

• Radioactivity.

• Stability.

What is the mass of an Uranium-235 atom?

• 92

• 235

• 143

• 0