Classifying Matter

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 hydrogen (H), oxygen (O), and magnesium (Mg).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and sodium chloride (NaCl).

Front

What is a mixture?

Back

A mixture is made of two or more substances that are together in the same place but are not chemically bonded. Examples include fruit punch and salad.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include saltwater and air.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture where the components can be seen and are not uniform throughout. Examples include a salad or a bowl of cereal.

Front

What is the difference between a substance and a mixture?

Back

A substance has a definite composition and properties, while a mixture consists of two or more substances that retain their individual properties.

Front

What is pure oxygen an example of?

Back

Pure oxygen (O) is an example of an element.

Front

What is the definition of a chemical?

Back

A chemical is any substance that has a defined composition and properties, which can be an element or a compound.

Front

What is filtration?

Back

Filtration is a process used to separate solids from liquids or gases using a filter that allows only the fluid to pass through.

Front

What is the definition of a substance?

Back

A substance is a form of matter that has a specific chemical composition and distinct properties.