CHEM_CH5_Periodic Table_RSHS

Open Ended

Why do you think the periodic table is considered one of the most significant achievements in chemistry?

Fill in the Blank

Mendeleev predicted the properties of ___ before it was discovered, which was later confirmed by the discovery of gallium.

Open Ended

Describe the significance of grouping elements with similar properties in the periodic table.

Fill in the Blank

The periodic table was extensively changed after the work of ___ and Moseley.

Multiple Choice

Which of the following statements about the modern periodic table is correct?

• Elements are arranged by atomic number.

• Elements are arranged by atomic mass.

• Elements are grouped randomly.

• Elements are grouped by alphabetical order.

Multiple Choice

What was the main contribution of Dmitri Mendeleev to the development of the periodic table?

• He discovered all the elements

• He arranged elements by atomic number

• He predicted the existence of undiscovered elements

• He invented chemical reactions

Multiple Choice

What strategy did Mendeleev use to organize the elements in his periodic table?

• He arranged elements alphabetically.

• He grouped elements by color.

• He used note cards to rearrange elements based on atomic mass and chemical properties.

• He organized elements by their melting points.

Open Ended

Explain how the concept of 'periods' and 'groups' helps in understanding the structure of the periodic table.

Open Ended

Discuss the impact of Mendeleev’s predictions on the acceptance of the periodic table by the scientific community.

Multiple Choice

Which discovery confirmed the accuracy of Mendeleev's predictions about undiscovered elements?

• Discovery of oxygen

• Discovery of gallium

• Discovery of sodium

• Discovery of helium

Multiple Select

Which of the following statements about Mendeleev's periodic table are correct?

• Elements were placed in order of increasing atomic mass.

• Elements were grouped by similar chemical properties.

• The table predicted the existence of undiscovered elements.

• The current periodic table is organized by atomic mass.

Fill in the Blank

The formula of the oxide of Gallium is ___

Multiple Choice

What is the significance of the element Mendelevium in the context of the periodic table?

• It was named in honor of Mendeleev

• It is the lightest element

• It was the first element discovered after Mendeleev's death

• It is a noble gas

Open Ended

Discuss how Mendeleev’s predictions about the properties of undiscovered elements were validated by later discoveries.

Multiple Select

Which of the following statements about Mendeleev’s periodic table are correct?

• It was published in 1869

• It was organized by atomic mass

• It could predict properties of undiscovered elements

• It was based on atomic number

Multiple Choice

Which property did Mendeleev use to organize the elements in his periodic table?

• Atomic mass

• Atomic number

• Density

• Melting point

Open Ended

Explain how the periodic table is similar to the organization of items in a grocery store, as described in the market analogy.

Multiple Choice

Which experiment led to the discovery of the atomic nucleus and how did it impact the development of the periodic law?

• Rutherford's gold foil experiment; it revealed the atomic nucleus and shifted focus from atomic mass to atomic number.

• Thomson's cathode ray experiment; it discovered the electron and led to the periodic law.

• Mendeleev's periodic table; it organized elements by atomic mass and led to the discovery of the nucleus.

• Bohr's model; it explained atomic structure and led to the periodic law.

Open Ended

Explain how Henry Moseley's work changed the way elements were arranged in the periodic table.

Multiple Choice

Which of the following statements about the placement of tellurium and iodine in the periodic table is correct?

• Tellurium and iodine were placed correctly based on atomic mass.

• Tellurium and iodine were placed correctly based on atomic number.

• Tellurium and iodine were placed incorrectly based on atomic number.

• Tellurium and iodine were placed incorrectly based on atomic mass.

Fill in the Blank

The periodic table is divided into different blocks. The block that contains transition metals is called the ___ block.

Open Ended

Define the modern periodic law and name the two scientists credited with its foundation.

Multiple Choice

Which of the following best describes the structure of the modern periodic table?

• Rows represent groups and columns represent periods.

• Rows represent periods and columns represent groups.

• Both rows and columns represent periods.

• Both rows and columns represent groups.

Multiple Choice

Which of the following elements is classified as a noble gas in the periodic table?

• Neon

• Nitrogen

• Sodium

• Boron

Open Ended

Explain how the arrangement of elements in the periodic table leads to the periodic repetition of chemical and physical properties.

Multiple Select

Select all the elements from the list that are alkali metals.

• Li

• Na

• Mg

• K

Open Ended

What determines the length (how many elements are in) a period?

Open Ended

How many electrons can fit in an s sublevel? 

A p sublevel? 

 A d sublevel?

Fill in the Blank

Determine Period # From Electron Configuration
[Ne] 3s¹

Fill in the Blank

1. Determine Period # From Electron Configuration
   [Kr] 4d¹⁰ 5s² 5p⁵

Open Ended

Why is the s-block 2 columns wide? 

Why is the p-block 6 columns wide? 

Why is the d-block 10 columns wide?

Open Ended

[Ne] 3s¹: What period is this in?  What block?

1s²2s²2p⁴: What period is this in?  What block?

[Ar]3d⁸4s²: What is the highest principal energy level? What period does that put it in?

Multiple Choice

The length of each period on the periodic table is determined by...

• Number of neutrons in the nucleus

• The number of electrons needed to fill the sublevels for that period

• The date the elements were discovered

• The number of elements in the group

Multiple Choice

An element with the electron configuration [Ar]3d¹⁰4s²4p³ is located in...

• Period 3, p-block

• Period 4, d-block

• Period 4, p-block

• Period 3, d-block

Multiple Choice

The d-block elements, also known as the transition metals, correspond to which sublevel being filled?

• The d sublevel of the current principal energy level

• The d sublevel of the previous principal energy level (n-1)

• The p sublevel

• The s sublevel

Multiple Choice

How many elements are in Period 2, and why?

• 2 elements, because it only fills the 2s sublevel

• 8 elements, because it fills the 2s and 2p sublevels

• 10 elements, because it fills the 2s, 2p, and 2d sublevels

• 18 elements, because it fills the 3s, 3p, and 3d sublevels

Open Ended

Reflecting on what you learned about Mendeleev's periodic table, what questions do you still have or what would you like to explore further about the periodic table?

Multiple Choice

What is one key difference between Mendeleev's periodic table and the modern periodic table?

• Mendeleev arranged elements by atomic number, while the modern table uses atomic mass.

• Mendeleev arranged elements by atomic mass, while the modern table uses atomic number.

• Both tables arrange elements by atomic mass.

• Both tables arrange elements by atomic number.