Checkpoint 4 review PAP

How many electrons are in an isotope of iron with an atomic mass number of 54?

• 26

• 28

• 54

• 30

Tags

NGSS.HS-PS1-1

How many neutrons does Iron-54 have?

• 26

• 28

• 54

• 30

Tags

NGSS.HS-PS1-8

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

Which subatomic particle has the smallest mass of all three?

• Neutron

• Electron

• Positron

• Photon

What is one difference between the atomic structures of Carbon-12 and Carbon-13?

• Same number of protons

• Same number of electrons

• Different number of neutrons

• Same atomic mass

What is one similarity between the atomic structures of Carbon-12 and Carbon-13? (select two answers)

• Same number of protons

• Same number of electrons

• Different number of neutrons

• Same atomic mass

How many neutrons does Carbon-12 have?

• 5

• 6

• 7

• 8

How many protons and neutrons are there in Si-30

• 14 p and 14 n

• 14 p and 16 n

• 16 p and 14 n

• 16 p and 16 n

Tags

NGSS.HS-PS1-8

Label the following subatomic particles.

c

b

a

Neutron

Proton

Electron

Positron

Boron has two existing isotopes, Boron-10 (atomic mass = 10.01 atomic mass units) which is 19.78% abundant, and an isotope which is 80.22% abundant Boron-11 (atomic mass = 11.01 atomic mass units). What is the average atomic mass?

• 10.21 amu

• 9.01 amu

• 1081.22 amu

• 10.81 amu