Module 16: L3 ck - Periodic Table

Front

What is the electron dot diagram used for?

Back

It represents the valence electrons of an element, helping to predict its reactivity and bonding behavior.

Front

What group of the periodic table contains unreactive elements?

Back

Group 18, also known as the noble gases, contains unreactive elements.

Front

Who is Henry Moseley and what did he contribute to the periodic table?

Back

Henry Moseley was a scientist who arranged elements by atomic number, improving the organization of the periodic table.

Front

What is the significance of atomic number in the periodic table?

Back

The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.

Front

What are groups in the periodic table?

Back

Groups are vertical columns in the periodic table where elements have similar chemical properties and the same number of valence electrons.

Front

What are periods in the periodic table?

Back

Periods are horizontal rows in the periodic table where elements have the same number of electron shells.

Front

What is the symbol for potassium?

Back

The symbol for potassium is K.

Front

What is the general property of metals in the periodic table?

Back

Metals are typically shiny, good conductors of heat and electricity, and malleable.

Front

What is the general property of nonmetals in the periodic table?

Back

Nonmetals are usually dull, poor conductors of heat and electricity, and can be gases or brittle solids.

Front

What does it mean for an element to be reactive?

Back

A reactive element readily forms chemical bonds with other elements, often resulting in chemical reactions.