Periodic Table Notes (L2 - Full)

Open Ended

How does the organization of the periodic table help scientists understand the properties and relationships of elements?

Multiple Choice

Which scientist proposed the Law of Octaves and what was its significance in the development of the periodic table?

• John Newlands; it was one of the earliest systematic arrangements and predicted unknown elements

• Dmitri Mendeleev; it was the first periodic table based on atomic mass

• Henry Moseley; it introduced the concept of atomic number

• Marie Curie; it led to the discovery of radioactivity

Multiple Select

Select all the statements that are true about the periodic table based on the lesson.

• It organizes elements by increasing atomic number.

• Elements are grouped by shared physical and chemical properties.

• The periodic table was first organized by atomic mass.

• Every element's square contains its chemical symbol.

Multiple Choice

Which of the following information can you typically find in an element square on the periodic table?

• Atomic number, chemical symbol, atomic mass, element name

• Atomic number, melting point, atomic mass, element name

• Chemical symbol, boiling point, atomic mass, element name

• Atomic number, chemical symbol, density, element name

Multiple Choice

What is a period in the periodic table, and how does the atomic number change as you move across a period?

• A horizontal row; atomic number increases by 1 from left to right

• A vertical column; atomic number stays the same

• A diagonal line; atomic number decreases

• A group of elements with similar properties; atomic number is random

Open Ended

Explain how the number of electron shells and the number of electrons in the outermost shell change as you move across a period in the periodic table.

Multiple Select

Which of the following statements about groups/families in the periodic table are correct?

• Groups are vertical columns on the periodic table

• Elements in the same group have the same number of valence electrons

• There are 18 groups in the periodic table

• Groups are horizontal rows on the periodic table

Multiple Select

Which of the following are typical traits of transition metals?

• Hard and shiny

• Good conductors of heat and electricity

• Highly reactive with water

• Often used in building materials and electronics

Multiple Choice

Which group in the periodic table contains elements with 3 valence electrons and includes both metals and metalloids?

• Carbon Group

• Boron Group

• Oxygen Group

• Halogen Group

Multiple Select

Which of the following elements are examples from the Carbon Group?

• Carbon (C)

• Silicon (Si)

• Germanium (Ge)

• Gallium (Ga)

Multiple Choice

Which trend in the periodic table refers to the tendency of an atom to attract electrons in a chemical bond?

• Atomic radius

• Ionization energy

• Electronegativity

• Reactivity

Multiple Choice

Which effect is responsible for blocking the attraction from the nucleus to the outer electrons?

• Nuclear charge

• Shielding effect

• Atomic mass

• Ionization energy

Multiple Select

Which of the following statements about atom size trends is/are correct?

• Atom size decreases across a period due to higher nuclear charge.

• Atom size increases down a group due to higher shielding effect.

• Atom size increases across a period due to higher shielding effect.

• Atom size decreases down a group due to higher nuclear charge.

Open Ended

Describe how ionization energy changes across a period and down a group, and explain the reasons for these trends.

Multiple Choice

Which of the following trends is observed for electronegativity in the periodic table?

• Electronegativity increases down a group.

• Electronegativity decreases across a period.

• Electronegativity increases across a period.

• Electronegativity remains constant across a period.