Reading the 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

How do you determine the number of protons in an element?

Back

The number of protons is equal to the atomic number of the element, which can be found on the periodic table.

Front

What is the mass number of an element?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

How do you calculate the number of neutrons in an element?

Back

To find the number of neutrons, subtract the atomic number from the mass number (Neutrons = Mass Number - Atomic Number).

Front

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

Back

Elements are arranged by increasing atomic number, which reflects their properties and relationships.

Front

What does the symbol 'K' represent in the periodic table?

Back

'K' is the chemical symbol for potassium, which has an atomic number of 19.

Front

How many electrons does an atom have if it is neutral?

Back

In a neutral atom, the number of electrons is equal to the number of protons.

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 the relationship between atomic mass and isotopes?

Back

The atomic mass of an element is a weighted average of the masses of its isotopes.

Front

What does the term 'valence electrons' refer to?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.