atoms, elements, molecules, compounds

Front

What is an atom?

Back

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

Front

What is an element?

Back

A pure substance made of only one type of atom.

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

All compounds are molecules, but not all molecules are compounds; a molecule can consist of the same type of atoms.

Front

What is the formula for density?

Back

D = M / V (Density = Mass / Volume).

Front

What is the tiniest particle in the universe?

Back

Atoms.

Front

Can a molecule be made of the same type of atoms?

Back

Yes, for example, O2 (oxygen gas) is a molecule made of two oxygen atoms.

Front

What is a chemical bond?

Back

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

Front

What is the periodic table?

Back

A table that organizes all known elements by their atomic number and properties.