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Name: ________________________

**Test L**

1. All the following describe a solution EXCEPT:
A. Clear
B. Homogeneous
C. Cannot pass through filter paper.
D. Can be separated by physical means.

2. Salt dissolved in water is a/an:
A. Compound
B. Element
C. Heterogeneous mixture

3. Which of the following is a homogeneous mixture?
A. Oil and water
B. Sand and water
C. Halo-halo
D. Solution

4. Homogeneous and heterogeneous mixtures are different because:
A. Heterogeneous has 2 substances while homogeneous has 3 or more substances.
B. Homogeneous looks the same throughout, while heterogeneous you can see the different parts.
C. Heterogeneous looks the same throughout, while homogeneous you can see the different parts.
D. Both have an equal number of substances.

5. This type of mixture contains two or more substances that are visibly distinguishable.
A. Heterogeneous
B. Homogeneous
C. Solution
D. Suspension

**Test II**

1. What type of solution has a small amount of solute and more solute would dissolve if added?
A. Unsaturated
B. Concentrated
C. Saturated
D. Supersaturated

2. When a solution cannot dissolve any more solute because it is at its maximum solute level, how can the solution be described?
A. Concentrated
B. Saturated
C. Supersaturated
D. Unsaturated

3. Which type of solution contains too much solute and will not dissolve but appears to be thick and crystallizes rapidly?
A. Concentrated
B. Dilute
C. Saturated
D. Supersaturated

4. You are given a 40 mL solution in a beaker. You add more solute and observe that some particles did not dissolve. What type of solution is it?
A. Concentrated
B. Saturated
C. Supersaturated
D. Unsaturated

5. How will you prepare an unsaturated solution?
A. Freeze the mixture.
B. Stir the powder in the liquid.
C. Add a smaller amount of powder to the liquid.
D. Add more solute in a lower amount of solvent.

Score: ____________

Answer :

Final answer:

This answer categorizes various substances as elements, compounds, and mixtures, emphasizing the differences between homogeneous and heterogeneous mixtures. It also clarifies types of solutions, including unsaturated, saturated, and supersaturated solutions. Understanding these classifications forms a basis for studying chemical solutions and mixtures in chemistry.


Explanation:

Chemical Solutions and Mixtures

Understanding the different types of mixtures is fundamental in chemistry. Here, we can classify various substances as either elements, compounds, solutions (homogeneous mixtures), or heterogeneous mixtures.

  1. Element: A pure substance that cannot be broken down into simpler substances. Examples include gold and hydrogen.
  2. Compound: A substance formed when two or more elements chemically bond together. Examples are water (H2O) and carbon dioxide (CO2).
  3. Solution (Homogeneous mixture): A mixture that appears uniform throughout, such as salt water where the salt is completely dissolved in the water.
  4. Heterogeneous mixture: A mixture where the different components are visibly distinguishable, like soil or a mixture of sand and water.

Based on the definitions provided, we can classify the given substances:

  • Salt: Compound
  • Pure water: Compound
  • Soil: Heterogeneous mixture
  • Salt water: Solution (homogeneous mixture)
  • Pure air: Solution (homogeneous mixture)
  • Carbon dioxide: Compound
  • Gold: Element
  • Bronze: Heterogeneous mixture (an alloy of copper and tin)

Examples of mixtures:

  • Homogeneous mixtures: soda water, air.
  • Heterogeneous mixtures: oil and water, a salad.

Additionally, when understanding solutions:

  1. A solution that contains a small amount of solute that can dissolve more solute if added is called unsaturated.
  2. A solution that cannot dissolve more solute because it has reached its maximum solute level is saturated.
  3. A solution that contains more solute than it can dissolve is referred to as supersaturated.
  4. If you add solute to a solution and see undissolved particles, that solution is classified as saturated.
  5. A concentrated solution has a high amount of solute relative to the solvent.

Learn more about Mixtures and Solutions here:

https://brainly.com/question/37356174


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