Mixtures vs. Pure Substances

Dr. Pepper:

Pure Substance or Mixture?

• Pure Substance

• Mixture

Sand:

Pure Substance or Mixture?

• Pure Substance

• Mixture

Salt:

Pure Substance or Mixture?

• Pure Substance

• Mixture

Tags

NGSS.MS-PS1-1

What term belongs in #3?

(a)  

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

Sand

• Mixture

• Compound

Tags

NGSS.MS-PS1-2

Chicken noodle soup

• Homogeneous mixture

• Heterogeneous mixture

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

A bottle of dishwashing detergent contains a clear, viscous liquid. The label has a long list of ingredients, including water, sodium lauryl sulfate, fragrance, and Blue dye #5.

What can you infer about the material in the bottle from this label and the appearance of the liquid?

• It is a pure substance.

• It is a compound.

• It is a heterogeneous mixture.

• It is a homogeneous mixture.

Saltwater is

• Mixture

• Compound