Elements and Compounds

Front

What is the smallest unit of an element?

Back

Atom

Front

What is the purpose of chemical symbols?

Back

To represent elements on the periodic table.

Front

Which of the following is a chemical symbol?

Back

O

Front

What is the periodic table of elements?

Back

A chart that organizes all known elements based on many properties.

Front

What is the smallest unit of matter?

Back

Atom

Front

What is an element?

Back

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

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is a molecule?

Back

The smallest unit of a chemical compound that retains its chemical properties.

Front

What does the chemical formula H2O represent?

Back

Water, which consists of two hydrogen atoms and one oxygen atom.