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

What is the atomic number of Hydrogen?

Back

1

Front

What is the atomic number of Oxygen?

Back

8

Front

What is the atomic mass of Oxygen?

Back

15.999

Front

What is the atomic number of Rubidium?

Back

37

Front

What symbol represents Sulfur?

Back

S

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number.

Front

What does the term 'element' mean?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is the significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting the number of protons and neutrons in the nucleus.

Front

What is a chemical symbol?

Back

A chemical symbol is a one or two-letter notation used to represent an element.