Elements, Compounds and Mixtures

Front

What is an element?

Back

A substance that is made up of one type of atom and can't be reduced to simpler substances.

Front

What is a compound?

Back

A substance made of two or more different atoms chemically bonded to one another.

Front

What is a mixture?

Back

A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

Front

How many different types of atoms are in a molecule of water (H2O)?

Back

2 (Hydrogen and Oxygen)

Front

What is the periodic table of elements?

Back

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

Front

What is aluminum (Al)?

Back

An element.

Front

What is air classified as?

Back

A mixture.

Front

Can compounds be separated by physical means?

Back

No, compounds can only be separated by chemical processes.

Front

What is the smallest unit of an element?

Back

An atom.

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 atoms chemically bonded.