Isotopes & average atomic mass practice

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

Tags

NGSS.MS-PS1-1

What subatomic particle is electrically neutral (no charge)?

• Proton
• Ion
• Neutron
• Electron

Tags

NGSS.MS-PS1-1

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

Tags

NGSS.MS-PS1-1

How many protons does this atom have?

• 2.5
• 6
• 5
• 10.811

Tags

NGSS.MS-PS1-1

In order for me to find the number of neutrons, I must round the atomic mass and then do what?

• atomic number-atomic mass
• atomic number x atomic mass
• atomic mass + atomic number
• atomic mass - atomic number

Tags

NGSS.MS-PS1-1

How many neutrons are in Magnesium?

• 36

• 12

• 24

• 6

Tags

NGSS.MS-PS1-1

How many electrons are in Sulfur?

• 32

• 16

• 48

• 8

Tags

NGSS.HS-PS1-1

Which would you do to change this Lithium to a new element?

• Add a neutron

• Add an electron

• Add a proton

• Add a proton and neutron\

Tags

NGSS.MS-PS1-1

4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?

• 41.996 amu

• 42.194 amu

• 10.432 amu

• 40.048 amu

4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?

• 41.97 amu
• 42.19 amu
• 10.43 amu
• 40.04 amu