Electrons and Energy Levels

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

How many valence electrons can fit in the first energy level?

• 2
• 1
• 4
• 8

What is the goal of an atom?

• To become stable by filling its energy level with all its valence electrons
• To bond with another atom
• To gain the most amount of energy possible
• To lose all its electrons

What group on the periodic table is stable on its own because they have all their valence electrons?

• Noble Gases
• Halogens
• Alkali
• Alkaline Earth

What noble gas does not have 8 valence electrons?

• Radon
• Krypton
• Helium
• Neon

What does the nucleus of an atom contain?

• protons and electrons
• protons and neutrons
• electrons and neutrons
• protons, neutrons and electrons

Tags

NGSS.MS-PS1-1

What is represented by the dots in an electron dot diagram?

• the number of atoms sharing an electron
• the total number of electrons in an atom
• the number of valence electrons in an atom
• the number of electrons circling a nucleus

Tags

NGSS.HS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.MS-PS1-1

What is the location of the electron?

• the free floating negatively charged electron cloud
• the free floating positively charged electron cloud
• the very dense positively charged electron orbital
• the positively charged very dense nucleus

Tags

NGSS.MS-PS1-1