• Element
• Compound
• Mixture

• Element
• Compound
• Mixture

• Element
• Compound
• Mixture

• Element
• Compound
• Mixture

• Element
• Compound
• Mixture

A pure substance that cannot be broken down into any other substance.

• Elements

• Compounds

• Mixtures

A(n) ______________ is formed when two or more elements chemically combine.

• Compound

• Element

• Mixture

A ___________ is a combination of many different elements not chemically combined.

• Element

• Compound

• Mixture

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that

• only a physical change occurred.

• a chemical change occurred.

• only a loss of mass occurred.

• the formation of an element occurred.