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, made up of only one type of atom.

Front

What is a molecule?

Back

A group of two or more atoms bonded together, which can be of the same or different elements.

Front

What is a compound?

Back

A substance formed when two or more different elements bond together in a fixed ratio.

Front

What is the difference between a molecule and a compound?

Back

A molecule can consist of the same or different types of atoms, while a compound must consist of different types of atoms.

Front

What does the chemical formula NaCl represent?

Back

Sodium chloride, a compound made of sodium and chlorine atoms.

Front

What is a chemical bond?

Back

The force that holds atoms together in a molecule or compound.

Front

What is an ionic bond?

Back

A type of chemical bond formed through the transfer of electrons from one atom to another, resulting in oppositely charged ions.

Front

What is a covalent bond?

Back

A type of chemical bond formed when two atoms share one or more pairs of electrons.

Front

What is a ball and stick model?

Back

A model used to represent molecules, where balls represent atoms and sticks represent the bonds between them.