Solubility Worksheet | PDF | Solubility | Solution - Free Printable

Let's solve the problem step by step based on the information in the image.

---

Background Knowledge Recap:

- Solubility is the amount of solute that can dissolve in a solvent (here, water).
- The graph shows how many teaspoons of each substance dissolve in 100 grams of water.

---

Analyzing the Bar Graph:

The bar graph shows solubility (in teaspoons per 100g water) for four substances:

1. Sugar – Bar reaches 20 teaspoons
2. Salt – Bar reaches 2 teaspoons
3. Epsom salts – Bar reaches 8 teaspoons
4. Bath salts – Bar reaches 6 teaspoons

---

Answering the Questions:

#### 1. About how many teaspoons of salt dissolve in the water?
From the graph:
✔ 2 teaspoons

> ✔ Answer: 2

---

#### 2. About how many teaspoons of bath salts dissolve in the water?
From the graph:
✔ 6 teaspoons

> ✔ Answer: 6

---

#### 3. Another substance is more soluble than bath salts but less soluble than Epsom salts. What range of teaspoons would you expect to dissolve?

We know:
- Bath salts = 6 teaspoons
- Epsom salts = 8 teaspoons

So, a substance more soluble than bath salts but less than Epsom salts must dissolve between 6 and 8 teaspoons.

> ✔ Answer: Between 6 and 8 teaspoons

---

#### 4. List the solutes in the bar graph in order of their solubility. Write the name of the most soluble substance first.

Order from most to least soluble:
1. Sugar – 20 tsp
2. Epsom salts – 8 tsp
3. Bath salts – 6 tsp
4. Salt – 2 tsp

> ✔ Answer:
Sugar, Epsom salts, bath salts, salt

---

Science Investigation: Does the size of a sugar particle affect its solubility?

This is an open-ended investigation prompt. Here’s how to design the experiment:

#### Hypothesis:
Smaller sugar particles (like powdered sugar) may dissolve faster or more easily than larger ones (like sugar cubes), because they have a greater surface area exposed to water.

#### Materials:
- Sugar cubes
- Powdered sugar
- Granulated sugar
- Equal amounts of water (e.g., 100 mL)
- Stirring rod or spoon
- Timer
- Measuring spoons

#### Procedure:
1. Measure equal amounts (e.g., 1 teaspoon) of each type of sugar.
2. Add each to separate beakers with the same amount of water at the same temperature.
3. Stir each mixture at the same rate and time.
4. Record how long it takes for each sugar to fully dissolve.
5. Repeat the experiment several times for accuracy.

#### Expected Result:
- Powdered sugar dissolves fastest (largest surface area).
- Granulated sugar dissolves next.
- Sugar cubes dissolve slowest (least surface area).

#### Conclusion:
Particle size affects the rate of dissolution, but not necessarily the maximum solubility (the total amount that can dissolve). The maximum solubility is a property of the substance, not the particle size.

> So, particle size does not change solubility, but it does affect how quickly it dissolves.

---

✔ Final Answers:

1. Salt: 2 teaspoons
2. Bath salts: 6 teaspoons
3. Range: Between 6 and 8 teaspoons
4. Order of solubility: Sugar, Epsom salts, bath salts, salt

And for the science investigation:
→ Particle size affects dissolution rate, but not solubility. Smaller particles dissolve faster due to increased surface area.

---

Let me know if you'd like a printable version or a diagram!