Fall Semester Exam Review

How is the mass number of an atom calculated?

• Number of protons + number of electrons

• Number of protons + number of neutrons

• Number of electrons + number of neutrons

• Number of protons + number of positrons

Which element has 54 protons and 77 neutrons?

• Xenon

• Krypton

• Argon

• Radon

Based on the diagram, how many protons (p⁺) are present in the atom?

• 5

• 6

• 7

• 8

Tags

NGSS.MS-PS1-1

How many electrons (e⁻) are present in the atom according to the diagram?

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

What is the number of neutrons (n⁰) in the atom as shown in the diagram?

• 4

• 5

• 6

• 7

Tags

NGSS.MS-PS1-1

What is the mass number of the atom depicted in the diagram?

• 10

• 11

• 12

• 13

Tags

NGSS.MS-PS1-1

Identify the element based on the number of protons in the diagram.

• Carbon

• Boron

• Nitrogen

• Oxygen

Tags

NGSS.MS-PS1-1

What is the number of protons (p⁺) in the element shown in the diagram?

• 74

• 110

• 184

• 36

Tags

NGSS.MS-PS1-1

What is the mass number of the element shown in the diagram?

• 184

• 74

• 110

• 36

Tags

NGSS.MS-PS1-1

Which element is represented by the atomic number 74?

• Tungsten (W)

• Gold (Au)

• Lead (Pb)

• Silver (Ag)