Periodic Table

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a noble gas?

Back

Noble gases are elements in Group 18 of the periodic table that are characterized by their lack of reactivity due to having a full valence shell.

Front

What does it mean for an element to be ductile?

Back

Ductility is the ability of a material to be stretched into a wire without breaking.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are usually dull, insulative, and brittle.

Front

What is the significance of the periodic table's arrangement?

Back

The periodic table is arranged by increasing atomic number, which reflects the periodic trends in element properties.

Front

What is an isotope?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

Front

What is electronegativity?

Back

Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond.

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.

Front

What are alkali metals?

Back

Alkali metals are highly reactive elements found in Group 1 of the periodic table, including lithium, sodium, and potassium.