Particles to Mass

What concept on pressure does the image show?

• adding particles increases pressure

• more mass increases pressure

• larger particles increases pressure

• more space between particles increases pressure

Which statement correctly describes the relative masses of subatomic particles?

• Protons and neutrons have almost equal masses, and electrons have a much smaller mass.

• Neutrons and electrons have almost equal masses, and protons have a much larger mass.

• Protons, neutrons, and electrons all have roughly the same masses.

• Electrons and protons have the same masses, and neutrons have no mass.

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

Which subatomic particle has the least mass?

• Proton

• Neutron

• Electron

• Alpha particle

What is the mass of a proton in atomic mass units (amu)?

• 1 amu

• 0.5 amu

• 0.1 amu

• 2 amu

How does the mass of a neutron compare to that of a proton?

• Neutron is slightly heavier

• Neutron is slightly lighter

• They have the same mass

• Neutron is twice as heavy

Which particle is responsible for the majority of an atom's mass?

• Electron

• Proton

• Neutron

• Photon

What is the approximate mass of an electron compared to a proton?

• 1/2000 of a proton

• 1/1000 of a proton

• Equal to a proton

• Twice the mass of a proton

In a neutral atom, how does the number of protons compare to the number of electrons?

• More protons than electrons

• More electrons than protons

• Equal number of protons and electrons

• Cannot be determined

Which of the following particles is not found in the nucleus of an atom?

• Proton

• Neutron

• Electron

• Quark

Tags

NGSS.HS-PS1-8