Periodic Table

Front

What is an alkali metal?

Back

Alkali metals are the elements found in Group 1 of the periodic table, characterized by having one electron in their outermost shell. They are highly reactive and include elements like lithium, sodium, and potassium.

Front

Which element is an example of an alkali metal?

Back

Sodium (Na) is an example of an alkali metal.

Front

What do the groups of the periodic table indicate?

Back

The groups of the periodic table indicate the number of valence electrons in the outer shell of the elements.

Front

What is a valence electron?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

Which element is similar to fluorine (F)?

Back

Chlorine (Cl) is similar to fluorine.

Front

What are the three main subatomic particles in an atom?

Back

The three main subatomic particles are protons, neutrons, and electrons.

Front

Which subatomic particle is the smallest?

Back

The electron is the smallest subatomic particle.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, and they are found along the staircase line on the periodic table.

Front

Give an example of a metalloid.

Back

Silicon (Si) is an example of a metalloid.

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.