Elements, Compounds, & Molecules

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. For example, water (H2O) is a compound made of hydrogen and oxygen.

Front

What is a molecule?

Back

A molecule is the smallest unit of a chemical compound that retains its chemical properties. It can consist of two or more atoms bonded together, which can be the same or different.

Front

Is Br an element, compound, or molecule?

Back

Element

Front

Is N4 an element, compound, or molecule?

Back

Molecule

Front

Is K an element, compound, or molecule?

Back

Element

Front

Is NH3 an element, compound, or molecule?

Back

Compound

Front

Is CO2 an element, compound, or molecule?

Back

Compound

Front

What is the difference between an element and a compound?

Back

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

Front

Can a molecule be an element?

Back

Yes, a molecule can be an element if it consists of two or more atoms of the same element bonded together, like O2 (oxygen gas).