Separation by Evaporation - Presentation is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

<p>This educational presentation introduces the concept of separation by evaporation, a key process in the field of chemistry. The presentation aims to teach students about the properties and changes of materials, specifically how to identify the solute and the solvent in a solution, understand the role of the solute as the substance that dissolves, and explain the process of evaporation for separating these components. Through interactive questioning, the presentation encourages learners to engage with the material and solidify their comprehension of the evaporation process.</p>

<p>The presentation includes a practical example featuring Dr Rupert Hynes, a chemical engineer, who explains the use of evaporators in the pharmaceutical industry. These machines employ evaporation to separate medicinal compounds from water during the pill-making process. Dr Hynes elucidates the principle that heating water provides the energy for it to transition from liquid to gas, leaving the solid medicine behind. Additionally, the presentation covers an experiment demonstrating evaporation, where students observe water disappearing over time, and learn about factors affecting the rate of evaporation. Finally, the content guides learners to reflect on their understanding of solutions and the efficiency of evaporation as a separation technique, reinforcing the educational objectives with a set of review questions.</p>

Separation by Evaporation - Lesson Plan is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Separation by Evaporation - Lesson Plan

Separation by Evaporation - Teacher Explanation is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation 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

Separation by Evaporation - Teacher Explanation

Separation by Evaporation - Objectives Labels is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation 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

Separation by Evaporation - Objectives Labels

Separation by Evaporation - Results Tables is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation as part of their learning about properties and changes of materials, as specified by the national curriculum in England: science programmes of study.

Results Tables

Separation by Evaporation - Results Tables

Separation by Evaporation - Self Assessment is part of the lesson Separation by Evaporation    Students will learn about separation by evaporation 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

Separation by Evaporation - Self Assessment

<p>This lesson focuses on using knowledge of solids, liquids, and gases to separate mixtures through evaporation. Students will have previously learned about everyday materials and the states of matter in Year 1 and Year 4. The cross-curricular links to ICT and Maths are also noted, with pupils using research and calculations in their experiments. The lesson will address misconceptions related to evaporation, including that it turns the original liquid into a new substance, and that lots of heat is always required for evaporation to occur. Keywords, influential scientists, and important lesson guidance are also provided.</p> <h2>Activities</h2> <p>The lesson includes two activities: "Disappearing Water" and "Using Evaporation to Separate Solutes from Solvents." In the first activity, students will measure out 50mls of water into plastic cups, cover one cup with cling film, and observe the water loss over a week. In the second activity, students will use evaporation to separate salt from water. They will weigh a pie tin, add salt to it, measure 20mls of water and pour it into the tin, light a tealight and place it under the tin, and use a stopwatch to time how long it takes for the salt to fully dissolve.</p> <h2>Science Explained</h2> <p>The lesson explains that evaporation is a change of state from a liquid to a gas and that the heat or wind in the environment contributes to the rate of evaporation. Students will understand that water loss can be accounted for by evaporation and that the rate may be affected by factors such as airtightness and the environment.</p> <h2>Possible Questions</h2> <ul> <li>Was there a difference between the cup with film and that without after 1 week?</li> <li>Where do you think the water went?</li> <li>Which location showed the greatest water loss? Why do you think this is?</li> <li>How long do you estimate it would take for the water to evaporate completely?</li> </ul>

Separation by Evaporation

Science

Year 5

Properties and Changes of Materials

Separation by Evaporation - Presentation

Pzaz is a specialist, primary science provider, with schemes written for the non-specialist primary teacher. Created by a science education expert, Pzaz covers every statement of the National Curriculum for Reception to Year 6.