Atoms, Molecules, Elements, Compounds

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is an element?

Back

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

Front

What is a compound?

Back

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

Front

What is the chemical formula for water?

Back

H₂O

Front

What is the chemical formula for sulfuric acid?

Back

H₂SO₄

Front

How many atoms are in a molecule of glucose (C₆H₁₂O₆)?

Back

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

Front

What is the difference between an element and a compound?

Back

An element consists of only one type of atom, while a compound consists of two or more different types of atoms.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the molecule.

Front

Is H₂O a compound or an element?

Back

H₂O is a compound.