Educational worksheet focusing on chemistry concepts of solutions and mixtures, including identifying solvents and solutes and determining the type of mixture.

Let's solve the problems step by step.

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Question 4: Indicate the solvent and the solute for each solution.

In a solution:
- Solvent: The substance that dissolves the other (usually present in greater amount).
- Solute: The substance that is dissolved.

Let’s go through each:

#### a. Solution: water + salt
- Solvent: Water (it dissolves the salt)
- Solute: Salt

#### b. Solution: water + sugar
- Solvent: Water
- Solute: Sugar

#### c. Solution: Acetone + Nail polish
- Solvent: Acetone (used to dissolve nail polish)
- Solute: Nail polish

#### d. Solution: Water + ink
- Solvent: Water
- Solute: Ink

#### e. Solution: Alcohol + iodine
- Solvent: Alcohol (commonly used as a solvent for iodine)
- Solute: Iodine

#### f. Solution: water + food coloring
- Solvent: Water
- Solute: Food coloring

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✔ Answers for Question 4:

| Solution | Solvent | Solute |
|--------|--------|--------|
| a. water + salt | Water | Salt |
| b. water + sugar | Water | Sugar |
| c. acetone + nail polish | Acetone | Nail polish |
| d. water + ink | Water | Ink |
| e. alcohol + iodine | Alcohol | Iodine |
| f. water + food coloring | Water | Food coloring |

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Question 5: Roy was performing an experiment.

He put in the cup: water, sugar, syrup, oil, and pine nuts, then stirred them.

#### a. State the type of the mixture?

This mixture contains:
- Water (liquid)
- Sugar (solid, soluble in water)
- Syrup (viscous liquid, may dissolve in water)
- Oil (immiscible with water — forms separate layer)
- Pine nuts (solid particles, do not dissolve)

Since multiple substances are mixed but not all dissolve, and we see oil separating and solids floating or sinking, this is not a uniform mixture.

➡️ This is a heterogeneous mixture because its composition is not uniform throughout.

> 🔍 Answer: Heterogeneous mixture

#### b. Is this mixture a solution? Choose the correct answer.

A solution is a homogeneous mixture where the solute is completely dissolved in the solvent.

Here:
- Oil does not mix with water.
- Pine nuts remain as solid particles.
- Not everything is dissolved.

So, it is not a solution.

> ✔ Answer: No, it is not a solution.

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✔ Final Answers:

Question 5:
a. Type of mixture: Heterogeneous mixture
b. Is it a solution? No

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