Periodic Table

Front

What is an alkali metal?

Back

Alkali metals are elements found in Group 1 of the periodic table. They are highly reactive and include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Front

Which element is similar to magnesium (Mg)?

Back

Calcium (Ca) is similar to magnesium (Mg) as both are in Group 2 of the periodic table and share similar chemical properties.

Front

What does the atomic number represent?

Back

The atomic number represents the number of protons in an atom's nucleus, which also equals the number of electrons in a neutral atom.

Front

What are noble gases?

Back

Noble gases are elements in Group 18 of the periodic table. They are characterized by their lack of reactivity due to having a full valence shell. Examples include helium (He), neon (Ne), and argon (Ar).

Front

Which element is similar to fluorine (F)?

Back

Chlorine (Cl) is similar to fluorine (F) as both are halogens found in Group 17 of the periodic table.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties, allowing for the prediction of element behavior.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are elements in Group 2 of the periodic table, including beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are less reactive than alkali metals.

Front

What are halogens?

Back

Halogens are elements in Group 17 of the periodic table, known for their high reactivity. They include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle. Metals are found on the left side of the periodic table, and nonmetals on the right.

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, resulting in different atomic masses.