The Periodic table

Front

What is the Periodic Table?

Back

A tabular arrangement of chemical elements, organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means, consisting of atoms with the same number of protons.

Front

How many atoms are in a molecule of water (H₂O)?

Back

3 (2 Hydrogen atoms and 1 Oxygen atom).

Front

What does the atomic number represent?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a compound?

Back

A substance formed when two or more different elements are chemically bonded together.

Front

How many total atoms are in the compound C₆H₁₂O₆?

Back

24 (6 Carbon, 12 Hydrogen, 6 Oxygen).

Front

What is the formula for calculating the number of atoms in a compound?

Back

Add the subscripts of each element in the chemical formula.

Front

What is the significance of the group number in the Periodic Table?

Back

It indicates the number of valence electrons in the elements of that group.

Front

What is the significance of the period number in the Periodic Table?

Back

It indicates the number of electron shells in the atoms of the elements in that period.

Front

What is a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.