Final Prep Flashcard 1

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Oxygen (O) and Carbon (C).

Front

What is matter?

Back

Matter is anything that has mass and occupies space.

Front

What is a pure substance?

Back

A pure substance is a material made up of only one type of atom (element) or one type of molecule (compound).

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, such as rust forming on iron.

Front

How can matter be classified?

Back

All matter can be classified as pure substances or mixtures.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances where each retains its own properties. Examples include saltwater and air.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the components are not uniformly distributed, such as salad or sand and iron filings.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the components are uniformly distributed, such as sugar dissolved in water.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together, such as water (H2O) or carbon dioxide (CO2).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.