1.2: Mixtures and Solutions

What is a mixture?

• A chemical reaction between two substances

• A physical combination of two or more substances

• A single pure substance

• A type of solution

Which of the following is an example of a heterogeneous mixture?

• Sugar water

• Salt water

• Salad

• Tap water

What is a homogeneous mixture?

• A mixture with parts that are not uniformly mixed

• A mixture with parts that are uniformly mixed

• A mixture that cannot be separated

• A mixture that is always solid

Which of the following is an example of a solution?

• Gravel and sand

• Cereal and milk

• Sugar water

• Airborne dust

What is an aerosol?

• A type of solution

• Particles of dust that are suspended in the air

• A liquid mixture

• A solid mixture

Why does sugar dissolve faster in warm water than in cold water?

• Warm water is less dense

• Warm water has more energy

• Warm water is a better solvent

• Warm water is sweeter

Tags

NGSS.MS-PS1-4

A mixture in which a substance evenly dissolves in another substance:

• solution

• compound

• solute

• solvent

What is the definition of a solution? (question 15. B)

• a mixture that is homogeneous and will NOT settle out

• a mixture that is heterogenous and will settle out

• a mixture that is heterogenous and will NOT settle out

• a mixture that is homogeneous and will settle out

Solutions are ​ ​ (a)   mixtures.

• homogeneous
• heterogeneous

This type of mixture contains two or more substances that are visibly distinguishable. 

• homogeneous
• heterogeneous
• solution
• colloid