History DOES belong in Science Class
Using the table and periodic trends
Groups of the table
Mystery Box
100

Who was credited with first organizing the modern periodic table?

Dmitri Mendeleev

100

What is the measure of the attraction between the nucleus and shared valence electrons?

Electronegativity

100

How many valence electrons does the Halogen group have?

7

100

What is the distance from the center of an atom's nucleus to its outermost electron?

Atomic radius

200

Who was the first to quantify electronegativity?

Linus Pauling

200

As you go from top to bottom in the periodic table, the atomic radii....

Increases

200

How many valence electrons does the Boron group have?

3

200

What does Germanium, Arsenic, Antimony, and Tellurium belong to?

Metalloid

300

Who used atomic numbers to help form the modern periodic table?

Henry Mosely

300

What is electron affinity?

The change in energy when an electron is added to a neutral atom to form an anion

300

As the atomic numbers of halogens increase, what happens to their densities, melting points, and boiling points?

They increase

300

Which sublevel block is Uranium found in?

block

400

What did John Newlands do?

Grouped the elements by mass, but in bigger groupings that Dobereiner.  Used atomic mass.  Stated the law of octaves

400

List the following elements in order of increasing atomic radius and decreasing electronegativity:

Lithium, Magnesium, Phosphorus, Krypton

Krypton, Phosphorus, Lithium, Magnesium

400

Give properties of chalcogens and elements found in this group.

Properties: six valence electrons, and oxygen is colorless, odorless, and tasteless and reactive


Elements found: oxygen, sulfur, selenium, tellurium, Polonium, and Livermorium

400

What are generally gases or soft, crumbly solids?

Nonmetals

500

What did Antoine Lavoisier do?

Presented a list of thirty substances that he declared could not be broken down into simpler substances

500

Which have bigger atomic radii, cations or anions? Why?

Anions are larger  since the extra electrons will repel each other and will be shielded by other electrons

500

What is the difference between the lanthanoid series and the actinoid series?

Lanthanoid series are found naturally in the earth's crust.

Only five of the actinoid series are found in nature.

500

What is ionization energy?

The amount of energy required to remove an electron from an atom