Classifying Particles

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus made of protons and neutrons, surrounded by electrons.

Front

What is a molecule?

Back

Front

What is a formula unit?

Back

Front

Example of an atom:

Back

Front

Example of a molecule:

Back

Front

Example of a formula unit:

Back

Front

What distinguishes a molecule from a formula unit?

Back

A molecule is formed by covalent bonds between atoms, while a formula unit represents the simplest ratio of ions in an ionic compound.

Front

What is the significance of the subscript in chemical formulas?

Back

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond together, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is the role of protons in an atom?

Back

Protons are positively charged particles found in the nucleus of an atom. They determine the atomic number and identity of the element.