Elements and Compounds

Front

What is an element?

Back

An element is a pure substance that contains only one kind of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements bond together.

Front

Where can elements be found?

Back

Elements can be found on the periodic table.

Front

What cannot be broken down into simpler substances?

Back

An element cannot be broken down into other substances.

Front

Which of the following represents an element: H2O, H2, NaCl, CaCO3?

Back

H2 represents an element.

Front

How are compounds different from elements?

Back

Compounds are a combination of two or more elements, while elements consist of only one type of atom.

Front

What is the smallest unit of an element?

Back

The smallest unit of an element is an atom.

Front

What is a mixture?

Back

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

Front

Can compounds be broken down?

Back

Yes, compounds can be broken down into their constituent elements through chemical reactions.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.