Dissolving, Mixtures and Changes of State - Results Tables is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

<p>The exploration of solubility begins by distinguishing which substances can dissolve in a solvent to form a solution. Students investigate the solubility of various solids such as salt, sand, soil, and sugar, recording whether a solution was made and classifying each solid as soluble or insoluble. This forms the basis for understanding the nature of different materials and their interaction with solvents. The next step in the investigation involves determining which solute has the highest solubility. Using a saturation point measured in teaspoons, students rank solutes including salt, bicarbonate of soda, granulated sugar, and citric acid, thus comparing their ability to dissolve at a given concentration.</p>

<p>Further inquiry delves into the effects of temperature on solubility. Students examine how the saturation point of different solutes—salt, sugar, bicarbonate, and citric acid—changes with water at cold, medium, and warm temperatures, thereby observing the influence of thermal energy on the dissolving process. Additionally, the investigation explores how temperature affects the properties of chocolate. By observing milk, white, and dark chocolate before and after melting, as well as after freezing, students gain insights into the physical changes and the stability of chocolate when subjected to temperature variations. These practical experiments provide a hands-on understanding of solubility, mixtures, and changes of state.</p>

Dissolving, Mixtures and Changes of State - Lesson Plan is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Dissolving, Mixtures and Changes of State - Lesson Plan

Dissolving, Mixtures and Changes of State - Teacher Explanation is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Teacher Explanation

Dissolving, Mixtures and Changes of State - Teacher Explanation

Dissolving, Mixtures and Changes of State - Objectives Labels is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Objectives Labels

Dissolving, Mixtures and Changes of State - Objectives Labels

Dissolving, Mixtures and Changes of State - Presentation is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Dissolving, Mixtures and Changes of State - Presentation

Dissolving, Mixtures and Changes of State - Self Assessment is part of the lesson Dissolving, Mixtures and Changes of State    Students will learn about dissolving, mixtures and changes of state as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Self Assessment

Dissolving, Mixtures and Changes of State - Self Assessment

<p>This lesson focuses on teaching pupils how to demonstrate that dissolving, mixing, and changes of state are reversible changes. They will learn how to compare and group everyday materials based on properties such as hardness, solubility, transparency, conductivity, and response to magnets. This lesson covers topics learned in previous years including states of matter, properties of everyday materials, and how to change the shape of solid objects.</p> <p>The cross-curricular links include ICT, where pupils can research the contents of seawater, and Maths, where pupils can create graphs of their experimental results. Additionally, pupils can learn about the history of metalworking and the transition from Bronze to Iron Age. Some common misconceptions, such as pure orange juice being a pure substance and air being a single substance, will be corrected in this lesson.</p> <h2>Keywords</h2> <ul> <li>Solute</li> <li>Solvent</li> <li>Solution</li> <li>Dissolving</li> <li>Soluble</li> <li>Insoluble</li> <li>Saturated</li> <li>Mixture</li> <li>Reversible</li> </ul> <h2>Influential Scientists</h2> <ul> <li>Mary Maynard</li> <li>Daly</li> <li>Linus Pauling</li> <li>Rosalind Franklin</li> <li>Stephanie Kwolek</li> </ul> <h2>Important Lesson Guidance</h2> <p>Citric acid and bicarbonate of soda are needed for the activity and can be obtained from a local secondary school or online. Bicarbonate of soda can also be purchased from a local supermarket.</p> <h2>Activity: Making a Solution</h2> <p>In this activity, each pupil in the group will be given a clear plastic cup and a solid such as salt, sugar, sand, or soil. They will fill the cup with half water, add one teaspoon of the solid, and observe if the solid dissolves. The group will share their results and fill in the table to determine if the solid is soluble or insoluble.</p> <h2>Activity: Solubility of Solutes</h2> <p>In this activity, each pupil will have their own cup, solute (salt, bicarbonate of soda, granulated sugar, or citric acid), and a set of measuring cylinders. They will measure 30ml of water, add a flat teaspoon of the solute, and stir well. The pupils will observe the water to see if the solute has dissolved and repeat the process until the saturation point is reached. The pupils will record their results and rank the solubility of each solute.</p> <p>The science behind this activity is explained by the solutes moving into the gaps between water particles when they dissolve. Once the spaces are filled, no more solute can dissolve and the saturation point is reached. The pupils will learn that the four solids being tested are solutes and the water is the solvent.</p>

Dissolving, Mixtures and Changes of State

Science

Year 5

Properties and Changes of Materials

Dissolving, Mixtures and Changes of State - Results Tables

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