Elements, compounds, mixtures and Separating techniques

A substance made of two or more elements chemically combined is...

• an element

• a compound

• a mixture

Answer explanation

A substance made of two or more elements chemically combined is called a compound, where the elements are bonded together in a specific ratio.

A substance made up entirely of one type of atom is..

• an element

• a compound

• a mixture

Answer explanation

A substance made up entirely of one type of atom is an element.

A substance made up two or more substances that are NOT chemically combined is called...

• an element

• a compound

• a mixture

Answer explanation

A substance made up two or more substances that are NOT chemically combined is called a mixture.

Match the following

• element

• 
• mixture

• 
• compound

• 

Identify as an element or a compound.

sulfur (S)

• element

• compound

Identify as an element or a compound.

carbon dioxide (CO₂)

• element

• compound

Identify as an element or a compound.

aluminum (Al)

• element

• compound

Identify as an element or a compound.

methane (CH₄)

• element

• compound

Identify as an element or a compound.

water (H₂O)

• element

• compound

Identify as an element or a compound.

nitrogen (N)

• element

• compound