Grade 6: Atoms, Mixtures, Elements

What is a substance made of two or more elements that are chemically combined called?

• A. element

• B. compound

• C. mixture

• D. solution

Is salt (NaCI) a compound or an element?

• Compound

• element

What is the definition of a compound?

• The smallest part of any substance which can exist on its own

• Two or more atoms chemically joined together (can be the same or can be different)

• A simple substance in which all the atoms are identical

• Two or more different elements chemically joined together

All matter is made of .....

• energy 
• atoms 
• air
• chemistry

A substance that cannot be broken down into any other substance by ordinary chemical means is called

• a molecule.

• a mixture.

• an element.

• a compound.

Two or more physically combined substances form

• a compound.

• an acid.

• an element.

• a mixture.

What is an example of a mixture?

• Table salt

• Water

• Oxygen

• Air

A substance that contains only one type of atom is a(n)

• compound

• element

• heterogeneous mixture

• homogeneous mixture

A compound is made of ________ atoms.

• big

• similar

• different

Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill