Atoms, Elements, Molecules, Compounds

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a compound?

Back

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

Front

What is the difference between a molecule and a compound?

Back

A molecule can be made of the same or different types of atoms, while a compound is specifically made of different types of atoms.

Front

What are examples of elements?

Back

Oxygen, Nitrogen, Hydrogen, and Calcium.

Front

What is a space filling model?

Back

A model that shows the relative sizes of atoms and how they fill space in a molecule.

Front

What is a ball and stick model?

Back

A model that represents atoms as balls and chemical bonds as sticks.

Front

What is the significance of chemical bonds?

Back

Chemical bonds hold atoms together in molecules and compounds.

Front

What is a chemical formula?

Back

A way to represent a compound using symbols for its constituent elements and numbers to show the ratio of atoms.