Elements ,mixtures and compounds 7B

Front

What is an element?

Back

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

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is a mixture?

Back

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

Front

What is the difference between an element and a compound?

Back

An element contains only one type of atom, while a compound contains two or more different types of atoms chemically bonded.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout, which can be an element or a compound.

Front

Is water (H2O) an element or a compound?

Back

Water (H2O) is a compound.

Front

Is oxygen (O2) an element or a compound?

Back

Oxygen (O2) is an element.

Front

What are examples of compounds?

Back

Examples of compounds include water (H2O), carbon dioxide (CO2), and sugar (C12H22O11).

Front

What are examples of mixtures?

Back

Examples of mixtures include air, salad, and saltwater.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.