PT & Electrons Review

Where do electrons exist in the atom?

• In the nucleus
• Both in the nucleus and around the outside of the atom.
• Around the outside of the atom.
• They don’t exist.

What is the charge of an electron?

• Negative
• Neutral
• Positive

What are the vertical columns on the periodic table called?

• Periods
• Groups
• Energy levels
• Blocks

What are the horizontal rows on the periodic table called?

• Periods
• Groups
• Families
• Blocks

What do electrons contribute to an atom?

• Mass
• Atomic number
• Charge & reactivity

True or False: if an electron is neutral, it will have an equal number of protons and electrons.

• true
• false

What are the electrons in the outermost shell called?

• Just “electrons”
• Outershell electrons
• Free electrons
• Valence electrons

The lowest energy state of an electron is its _ state.

What happens when an electron goes from a high energy state to a low energy state?

• Energy is released
• The substance gives off light
• Energy is absorbed
• A blackhole is formed

True or False: Many elements share the same atomic emission spectra.

• true
• false