elements and compounds

What is the picture displayed?

• atom

• element

• compound

What is the picture displayed?

• compound

• element

• molecule

Which of the following cannot be broken down into something simpler?

• A compound

• An element

• A mixture

How many elements are in C₆H₁₂O₆?

• 1

• 2

• 3

• 6

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

• formula
• atom
• subscript
• compound

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

• an element made of carbon and oxygen atoms.

• a solution made of carbon and oxygen atoms.

• a compound of carbon and oxygen atoms.

• a mixture of carbon and oxygen atoms.

How many Hydrogen atoms are present in H₂0?

• 2

• 4

• 1

• 0

This is the smallest unit of an element.

• atom

• molecule

• compound

• nucleus

Any combination of two or more atoms that are chemically combined is called this.

• molecule

• compound

• element

• pure substance

This is any combination of two or more atoms from different elements that are chemically combined.

• compound

• molecule

• element

• pure substance