Science worksheet for Cambridge Primary Science 4 on solutes, solvents, and solutions.

Worksheet Analysis and Solution

The worksheet focuses on the concepts of solutes, solvents, solutions, and related terms. Let's solve each part step by step.

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#### Part 1: Drag and Drop Matching
The task is to match the vocabulary words with their definitions.

##### Vocabulary Words:
1. Solute
2. Solvent
3. Soluble
4. Insoluble

##### Definitions:
- Property of a solute that will dissolve in a solvent.
- The substances that dissolves.
- Property of a solute that will not dissolve in a solvent.
- The substance that a solute dissolves into.

##### Matching:
1. Solute → "The substances that dissolves."
- A solute is the substance that gets dissolved in a solvent.

2. Solvent → "The substance that a solute dissolves into."
- A solvent is the substance that dissolves the solute.

3. Soluble → "Property of a solute that will dissolve in a solvent."
- Soluble means the ability of a solute to dissolve in a solvent.

4. Insoluble → "Property of a solute that will not dissolve in a solvent."
- Insoluble means the inability of a solute to dissolve in a solvent.

##### Final Match:
- Solute: The substances that dissolve.
- Solvent: The substance that a solute dissolves into.
- Soluble: Property of a solute that will dissolve in a solvent.
- Insoluble: Property of a solute that will not dissolve in a solvent.

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#### Part 2: Circle the Correct Answer

##### Question A: Which method below could be used to separate a mixture?
- a) evaporation
- b) filtering
- c) mixing
- d) none of the above

###### Explanation:
- Evaporation: This method separates a mixture by heating the solution to remove the solvent (usually water), leaving the solute behind. For example, salt can be separated from saltwater by evaporating the water.
- Filtering: This method separates a mixture by passing it through a filter to remove solid particles. For example, sand can be separated from water using a filter.
- Mixing: This is not a separation method; it combines substances to form a mixture.
- None of the above: Incorrect because both evaporation and filtering are valid methods for separating mixtures.

###### Correct Answer:
- a) evaporation and b) filtering are both correct methods. However, since only one answer can be circled, either is acceptable based on the context. For this solution, we will choose:
- Circle: a) evaporation

##### Question B: Identify a mixture among the following:
- a) Pure water
- b) Lemonade
- c) Gold

###### Explanation:
- Pure water: This is a pure substance, not a mixture. It consists of only one type of molecule (H₂O).
- Lemonade: This is a mixture because it contains multiple components, such as water, sugar, lemon juice, and other flavorings.
- Gold: This is a pure element, not a mixture.

###### Correct Answer:
- Circle: b) Lemonade

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Final Answers:

1. Drag and Drop Matching:
- Solute: The substances that dissolve.
- Solvent: The substance that a solute dissolves into.
- Soluble: Property of a solute that will dissolve in a solvent.
- Insoluble: Property of a solute that will not dissolve in a solvent.

2. Circle the Correct Answer:
- A: a) evaporation
- B: b) Lemonade

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Boxed Final Answer:

\[
\boxed{
\text{1. Solute: The substances that dissolve.} \\
\text{ Solvent: The substance that a solute dissolves into.} \\
\text{ Soluble: Property of a solute that will dissolve in a solvent.} \\
\text{ Insoluble: Property of a solute that will not dissolve in a solvent.} \\
\text{2. A: a) evaporation} \\
\text{ B: b) Lemonade}
}
\]