What color of light has the shortest wavelength?

• Red

• Violet

• Green

• Yellow

Tags

NGSS.HS-PS4-1

What does the period number represent on the periodic table?

• Number of protons

• Number of electron shells

• Number of neutrons

• Number of valence electrons

How does the size of an atom change as you move horizontally on the periodic table (left to right)?

• Increases horizontally

• Decreases horizontally

What is the trend for ionization energy on the periodic table?

• Increases down a group

• Decreases across a period

• Increases across a period

• Stays the same across a period

Tags

NGSS.HS-PS1-2

Which element is the most electronegative?

• Sodium

• Fluorine

• Oxygen

• Carbon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the most stable group of elements?

• Alkali metals

• Halogens

• Noble gases

• Transition metals

What is the Aufbau principle?

• Electrons fill the highest energy orbitals first.

• Electrons fill the lowest energy orbitals first.

• Electrons fill orbitals randomly.

• Electrons fill orbitals based on atomic mass.

What is a period in the periodic table?

• A column in the periodic table.

• A row in the periodic table.

• A group of elements with similar properties.

• A set of elements with the same atomic number.

What is a group in the periodic table?

• A row of elements

• A column of elements

• A single element

• A type of chemical bond

What does the group number tell you about an element?

• The number of protons

• The number of neutrons

• The number of valence electrons

• The atomic mass

Tags

NGSS.HS-PS1-1