Chemistry Section 1.3: Review Questions

5. What is another name for a homogeneous mixture?

A homogeneous mixture is also known as a solution.

3. Explain the difference between a heterogeneous mixture and a homogeneous mixture? Provide two examples of each.

Heterogeneous mixtures can easily be separated into their individual parts and do not have a uniform composition throughout (ex. trail mix, oatmeal raisin cookies, and a bag of jelly beans or M and M's) while homogeneous mixtures have a uniform composition throughout and cannot easily be separated into their individual parts (ex.: salt water, bottled/drinking water, oxygen, and other compounds).

7. Explain how you would separate a sugar water solution into sugar (solid) and water. Is this process a distillation or filtration?

I would separate a sugar water solution by filtering out the sugar using a funnel and a beaker. The water will flow through the funnel but the sugar will be trapped at the top of the funnel. This is called filtration.

2. Why can't mixtures be classified as pure substances?

Mixtures cannot be classified as pure substances because they are made up of more than one type of atoms.

1. What is meant by the term mixture? Provide two examples of a mixture.

The term mixture means a substance with a variable compositions. Examples: trail mix, Sun Chips and Cheese It Mixes, Chex Mix

6. Classify the following mixtures as homogeneous or heterogeneous. a. sand b. store-bought milk c. chocolate chip cookie dough d. pizza

a. heterogeneous b. homogeneous c. heterogeneous d. heterogeneous

4.Identify the following as mixtures or as pure substances. a. carbonated soft drink b. table salt (sodium chloride) c. vanilla pudding d. a penny e. ink from a pen f. 24-karat gold

a. mixture b. pure substance c. mixture d. pure substance e. mixture f. pure substance