1) Elements, Compounds, and Mixtures-SHEET

They can be broken down chemically.

They are represented by a chemical formula.

They are pure substances.

They are not found on the Periodic Table of Elements.

Salad

Coffee

Water and oil

Sand and salt

Compounds are pure substances, while elements are not.

Compounds can be broken down chemically, while elements cannot.

Compounds are found on the Periodic Table, while elements are not.

Compounds have the same properties as the elements that make them up.

Mixtures are composed of elements that are chemically combined.

Mixtures cannot be separated.

Mixtures undergo chemical changes when formed.

Mixtures can be homogeneous or heterogeneous.

Both are represented by a 1 or 2 letter chemical symbol.

Both are pure substances.

Both can be broken down chemically.

Both are found on the Periodic Table of Elements.

Homogeneous mixtures have a uniform composition, while heterogeneous mixtures do not.

Heterogeneous mixtures can be separated, while homogeneous mixtures cannot.

Homogeneous mixtures undergo chemical changes, while heterogeneous mixtures do not.

Heterogeneous mixtures are pure substances, while homogeneous mixtures are not.

Oxygen and Carbon

Hydrogen and Helium

Nitrogen and Oxygen

Carbon and Helium