Semester Review 2

How many protons does Chlorine have?

• 18
• 35.453
• 35
• 17

What does the decimal number under the element symbol represent?

• Atomic mass (Atomic weight)
• Atomic number
• Electron count
• Neutron count

Which subatomic particle has a negative charge?

• Nucleus
• Neutron
• Proton
• Electron

Which subatomic particle is positively charged?

• Proton
• Neutron
• Electron
• Nucleus

What part of an atom has the most mass?

• Electron cloud
• Valence electron shell
• Nucleus
• Bohr level

What do we call the space that electrons are in around a nucleus?

• Electron Cloud
• Valence Cloud
• Bohr Cloud
• Nucleus Cloud

Which subatomic particle has no charge?

• Neutron
• Proton
• Electron
• Nucleus

How are the elements organized on the periodic table?

• By the number of protons (atomic number)
• In alphabetical order
• By date of discovery
• By atomic mass

How many Periods are on the Periodic Table?

• 7
• 9
• 18
• 12

An atom of an element with atomic number 48 and mass number 120 contains

• 48 protons, 48 electrons, and 72 neutrons
• 72 protons, 48 electrons, and 48 neutrons
• 120 protons, 48 electrons, and 72 neutrons
• 72 protons, 72 electrons, and 48 neutrons