Solubility: Testing Objects

• Science
• 5th Grade

Solubility: Testing Objects

Learning Objective

At the end of the lesson, you will be able to classify objects as soluble or insoluble.

Introduce the learning objective to the students, explaining what they will achieve by the end of the lesson.

What do you already know about solubility.?

Slide 1: Introduction

Solubility is an important property of matter. Solubility refers to the ability of a substance to dissolve in another substance.

On the next slide, make an educated guess with your team on which objects are soluble or insoluble than water.  Discussion only.

Soluble- dissolves in water

Insoluble- does not dissolve in water

Start by introducing the concepts of solubility and density, providing a brief explanation of their importance.

Cork

Plastic

Iron

Rubber

Sponge

Styrofoam

Wood

Copper

Cotton

Oil

Syrup

Honey

Salt

Sugar

Drink mix

Sand

Slide 2: Solubility

Solubility can be determined by testing if a substance dissolves in a liquid. If it fully dissolves, it is soluble. If it does not dissolve or only partially dissolves, it is insoluble.

Explain the process of testing solubility and how to classify substances as soluble or insoluble. Emphasize the importance of observing if a substance fully dissolves or not.

Slide 4: Testing for Solubility

To test for solubility, add a small amount of the substance to a liquid and stir. Observe if it dissolves completely or not at all.  If it dissolves completely, it is soluble.   If it does not dissolve, it is insoluble.

Explain the practical steps to test for solubility. Instruct students to carefully observe and record the results of their tests.

Items	Solubility
Cork stopper- cork
Lego-plastic
Nail- iron
Donut Ring- Rubber
Dish Sponge- sponge
Packaging- styrofoam
Stick- wood
Penny- cooper
Cotton ball- cotton

As you test each object, drag and drop the correct answer into the data chart.

Insoluble in water

Soluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Items	Solubility
Cooking Oil
Syrup
Honey
Salt
Sugar
Drink Mix
Sand

As you test each object, drag and drop the correct answer into the data chart.

Insoluble in water

Soluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Insoluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Soluble in water

Slide 6: Conclusion

By testing the solubility of objects, we can better understand their properties and how they interact with other substances.

Summarize the key points of the lesson and emphasize the importance of testing solubility and density to gain a deeper understanding of objects.

What does it mean if a substance is insoluble?

1. It changes its physical state when mixed with a liquid.
2. It does not dissolve or only partially dissolves.
3. It becomes highly reactive in the presence of a liquid.
4. It fully dissolves in a liquid.

How can solubility be determined?

1. By heating a substance to its boiling point.
2. By observing the color change of a substance.
3. By measuring the density of a substance.
4. By testing if a substance dissolves in a liquid.

What is solubility?

1. The ability of a substance to dissolve in a liquid.
2. The ability of a substance to evaporate.
3. The ability of a substance to expand in volume.
4. The ability of a substance to freeze.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you learned in this lesson that can help your design team with The Cooler Project.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.