Pure Substances and Homogeneous and Heterogeneous Mixtures

Pure substances include:

• Elements

• Homogeneous Mixtures

• Compounds

• Heterogeneous Mixtures

Oxygen

• Element

• Compound

Tags

NGSS.MS-PS1-1

Water

• Element

• Compound

Tags

NGSS.MS-PS1-1

Heterogeneous mixture

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout

Homogeneous mixture

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout

Air

• Homogeneous mixture

• Heterogeneous mixture

Tags

NGSS.MS-ESS2-5

Chicken noodle soup

• Homogeneous mixture

• Heterogeneous mixture

Vinegar

• Homogeneous mixture

• Heterogeneous mixture

Which of the following materials should be classified as a mixture?

• Air

• Carbon

• Salt

• Water

Freshly brewed black coffee

• Heterogeneous

• Homogeneous