Unit #1 Test- Atoms, Ions, and Isotopes

How many protons are found in one atom of Carbon?

• 6
• 23
• 16
• 14
• 0

How many electrons are found in a neutral atom of Sodium?

• 23
• 1
• 11
• 12
• 2

Tags

NGSS.MS-PS1-1

What do you call the negatively charged particles around the outside of the nucleus in an atom?

• Proton
• Neutron
• Electron
• Moron
• Nucleon

Which two particles are located in the nucleus of an atom?

• Protons and electrons
• Protons and neutrons
• Neutrons and electrons
• Neutrons and leptons

Tags

NGSS.MS-PS1-1

How many neutrons are in an average atom of oxygen?

• 10
• 9
• 8
• 7

An element has a mass number of 11 and an atomic number of 5. How many neutrons would be found in this isotope?

• 11
• 5
• 6
• 16

The diagram pictured represents an atom of which element?

• Helium (He)
• Phosphorus (P)
• Nitrogen (N)
• Hydrogen (H)

Tags

NGSS.MS-PS1-1

The atomic number is equal to the number of ___________ and ____________ in a neutral atom.

• Protons, Electrons
• Protons, Neutrons
• Electrons, Neutrons
• Neutrons, Leptons

Which subatomic particle needs to be removed from this model to represent a boron atom with a mass of 10 AMU?

• Particle L
• Particle M
• Particle N
• Particle P

Tags

NGSS.MS-PS1-1

What do you call an atom that becomes charged due to the loss or gain of an electron?

• Neutral
• Ion
• Isotope
• Stable