Periodic Table of Elements

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 does the chemical symbol represent in the periodic table?

Back

The chemical symbol is a one or two-letter abbreviation for an element, such as 'Fe' for iron.

Front

Is water an element or a compound?

Back

Water is a compound, made up of two hydrogen atoms and one oxygen atom (H2O).

Front

Is sugar (C12H22O11) an element or a compound?

Back

Sugar is a compound, consisting of carbon, hydrogen, and oxygen.

Front

What information is found at the top of an element box in the periodic table?

Back

The number at the top of an element box is the atomic number.

Front

What is the difference between an element and a compound?

Back

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

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, usually expressed in atomic mass units (amu).

Front

What does the term 'periodic' in the periodic table refer to?

Back

'Periodic' refers to the recurring trends in the properties of elements as you move across or down the table.

Front

How are elements arranged in the periodic table?

Back

Elements are arranged in order of increasing atomic number.

Front

What is a group in the periodic table?

Back

A group is a column in the periodic table that contains elements with similar chemical properties.