Elements, compound, and mixtures

Front

What is an element?

Back

A substance that cannot be broken down into any other substances by physical or chemical means.

Front

What is a compound?

Back

A substance made of 2 or more elements that are chemically combined in a set ratio.

Front

What is a mixture?

Back

2 or more substances that are together in the same place, but their atoms are not chemically bonded.

Front

What is the smallest unit of an element?

Back

An atom.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the chemical formula for water?

Back

H₂O.

Front

What is a solution?

Back

A homogeneous mixture where one substance is dissolved in another.

Front

What is the difference between a mixture and a compound?

Back

A mixture contains two or more substances that are not chemically bonded, while a compound consists of two or more elements that are chemically bonded.

Front

Can a mixture be separated by physical means?

Back

Yes, mixtures can be separated by physical means such as filtration or evaporation.

Front

What is an example of a mixture?

Back

Chicken noodle soup.