Science worksheet exploring solubility with true/false questions and an experiment prompt.

I will solve the problem presented in the image by carefully reading the instructions and answering the true/false questions based on the provided background knowledge.

Step 1: Understand the Task

The image presents a science worksheet titled "All mixed up!" with two main parts:
1. Background Knowledge: Explains what a solution is (a mixture where one material dissolves into another) and introduces the concept of solubility.
2. Science Activity: A list of statements about different materials dissolving in water, for which I need to determine if they are True or False.

My task is to read each statement and decide whether it is true or false according to the scientific principles described.

Step 2: Analyze Each Statement

Based on general scientific knowledge, I will evaluate each statement:

1. Sand dissolves in boiling water.
* Sand is primarily made of silicon dioxide (SiO₂), which is insoluble in water, even when boiled. It will not dissolve; it will remain as a suspension or settle at the bottom.
* Answer: False

2. Sugar dissolves in lemon juice.
* Lemon juice is mostly water with citric acid. Sugar (sucrose) is highly soluble in water and its solutions. Therefore, sugar will readily dissolve in lemon juice.
* Answer: True

3. Salt dissolves in water.
* This is a classic example of dissolution. Table salt (sodium chloride, NaCl) is an ionic compound that readily dissolves in water to form a homogeneous solution.
* Answer: True

4. Salt dissolves in soapy water.
* Soapy water is water with soap molecules dissolved in it. Since salt dissolves in pure water, it will also dissolve in soapy water, as the soap does not prevent the dissolution of salt.
* Answer: True

5. Sugar dissolves in sand.
* This statement is misleading. Dissolution requires a solvent (usually a liquid) to dissolve a solute. Sand is a solid, not a solvent. Sugar cannot dissolve in solid sand; they would just be a mixture of two solids.
* Answer: False

6. Oil soluble in water.
* Oil is non-polar, while water is polar. Due to this difference in polarity, oil is hydrophobic and does not mix with or dissolve in water. They are immiscible.
* Answer: False

Step 3: Compile the Final Answers

Based on the analysis above, here are the correct answers for the science activity:

* Sand dissolves in boiling water. → False
* Sugar dissolves in lemon juice. → True
* Salt dissolves in water. → True
* Salt dissolves in soapy water. → True
* Sugar dissolves in sand. → False
* Oil soluble in water. → False

This completes the task as requested.