Using 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 neutrons in an isotope?

Back

The number of neutrons can be found by subtracting the atomic number (number of protons) from the mass number of the isotope.

Front

What is isotopic notation?

Back

Isotopic notation is a way to represent isotopes of an element, typically written as the element's symbol with the mass number as a superscript and the atomic number as a subscript.

Front

What is the mass number of an atom?

Back

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

Front

How many protons does an atom of carbon have?

Back

An atom of carbon has 6 protons.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

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.

Front

How can you identify an element using the periodic table?

Back

You can identify an element by its atomic number, which corresponds to the number of protons it has.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

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.