07:22 CKS3: Yr7 Chemistry Unit 1 – Me the the Scientist! Lesson number: 3. Lesson Title: Solutions and Mixtures. Learning OutcomesHow I didTargets Learning Outcome 1: To be able to explain the difference between pure mineral water and distilled water. Level 4 Learning Outcome 2: To be able to identify solutions and mixtures. Level 5 Learning Outcome 3: To be able to carry out an observation exercise using solutions and mixtures. Level 6. Connector: Suggest some differences between: distilled water tap water mineral water rain water sea water Cro2011

07:22 BIG picture Key Question: Quick Discussion: How is this lesson relevant to every day life? What skills will you be developing this lesson? HSW- by planning and carrying out an investigation/ Interpreting data/ evaluating an experiment ICT- through using laptops Numeracy- by using formulae in calculations Literacy- by writing explanations using correctly spelt keywords and good grammar. Team work- during a practical investigation Self management- by completing an individual assignment by ….. Creative thinking- by designing a ………………. Independent enquiry- by researching the internet Participation- during a practical activity Reflection- through self and peer assessment of each outcome

07:22 Lesson activities Visual: Demonstration Audio: Demonstration Kinaesthetic: Class Experiment

New Information for Task 1 Making distilled water Distilled water is pure water it has nothing dissolved in it. When the salt water started to boil steam formed. The reading on the thermometer rose to 100 o C, this is the boiling point of water. When the steam passed through the condenser it was cooled and so turned back to water. This is called condensation. The now pure water was collected in the collection flask. Tap water, mineral water, rain water and sea water are not pure because they have dissolved substances in them.

07:22 Create Evaluate Analyse Apply Understand Remember Understand (L4) I can explain the difference between pure mineral water and distilled water. Remember (L3) I can describe how to make distilled water. Demonstrate your Learning for Outcome 1 I am working at level.... because To get to the next level I need to

07:22 Keywords: Create sentences using the keywords to show that you know what they mean. Put your hand up if there is any key word from the list that you don’t understand. distilled water steam boiling point condensation solute solvent solution dissolve soluble insoluble mixture

07:22 Extended Learning Extended Learning task: Learn the key words - spellings and explanations Due date: Criteria for Level 5: – Basic description, basic detail. Criteria for Level 6: – Description with explanation and good level of detail. Criteria for Level 7: – Detailed description and in depth detailed explanation using examples to highlight points made.

07:22 Learning Outcome 1: Review Learning OutcomeHow I didTargets Learning Outcome 1: Level 5 Met? Partly met? Not met? How can I improve on Learning Outcome 1? Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column. To be able to explain the difference between pure mineral water and distilled water.

thermometer beaker of water tripod heat proof mat New Information for Learning Outcome 2 Dissolving Can you explain these terms? TermExplanation SoluteA substance that can be dissolved. SolventA substance that dissolves other substances. SolutionA homogeneous mixture of two or more substances. DissolveTo go into solution. To make a solution SolubleWill dissolve. InsolubleWill not dissolve. MixtureTwo or more substances that can be easily separated.

Mixtures A mixture is easy to separate. sand water

Solutions A homogeneous mixture of two or more substances A solution is a homogeneous mixture of two or more substances. In a solution the solute is evenly spread out throughout the solvent.

Solution or Mixture? oil and water copper sulphate and water sand and water Choose ONE of each type and write why they are a solution or a mixture. For the solution name the solute and the solvent

07:22 Create Evaluate Analyse Apply Understand Remember Apply (L5) I was able to correctly identify the solutions and mixtures that we were shown. Understand (L4) I can explain the difference between solutions and mixtures Demonstrate your Learning for Outcome 2 I am working at level.... because To get to the next level I need to

07:22 Learning Outcome 2: Review Learning OutcomeHow I didTargets Learning Outcome 2: Level 6 Met? Partly met? Not met? How can I improve on Learning Outcome 2? Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column. To be able to identify solutions and mixtures.

Learning Activities for Outcome 3 Reactions using Solutions an Observation Exercise. A good scientist needs to be able to observe and accurately record what they see. For each experiment fill a test tube 1/4 full with the solution and then add substance 2 as instructed. Watch carefully and record what you see. SolutionSubstance 2Observations Copper sulphate solution 5 drops of sodium hydroxide solution Copper sulphate solution is blue. When the sodium hydroxide was added …….. Dilute hydrochloric acid A strip of magnesium metal Lead nitrate solution Potassium iodide solution Iron(II) sulphate solution 5 drops of sodium hydroxide solution Copper sulphate solution A strip of magnesium metal Remember to wear safety glasses.

SolutionSubstance 2Observations Copper sulphate solution 5 drops of sodium hydroxide solution Copper sulphate solution is blue (1). When the sodium hydroxide solution was added a blue (1) solid (1) (a precipitate) was formed. Dilute hydrochloric acid A strip of magnesium metal Dilute hydrochloric acid is colourless. (1) When the magnesium metal was added bubbles/fizzing was seen (1) and the metal dissolved/disappeared. (1) Lead nitrate solution Potassium iodide solution Lead nitrate solution is colourless. (1) When the potassium iodide solution was added a yellow (1) solid (1) ( a precipitate) was formed. Iron(II) sulphate solution 5 drops of sodium hydroxide solution Iron(ii) sulphate solution is pale green /colourless (1). When the sodium hydroxide solution was added a (dirty) green (1) solid (1) (a precipitate) was formed. After a little while an orange colour was seen at the top of the mixture (1). Copper sulphate solution A strip of magnesium metal Copper sulphate solution is blue (1). When the magnesium metal was added bubbles/fizzing was seen (1) and the metal dissolved/disappeared. (1) A brown/black (1) solid (1) formed on the surface of the metal. There were 18 marks available. Record your score. Then write a comment about what you need to do to improve.

07:22 Create Evaluate Analyse Apply Understand Remember Apply (L5) I was able to do the practical as part of a team, and I recorded our observations. Understand (L4) I did the practical, but needed some help. Analyse (L6) I accurately recorded the observations and scored more than 13/18. Demonstrate your Learning for Outcome 3 I am working at level.... because To get to the next level I need to

07:22 Learning Outcome 3: Review Learning OutcomesHow I didTargets Learning Outcome 3: Level 6 Met? Partly met? Not met? How can I improve on Learning Outcome 3? Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column. To be able to carry out an observation exercise using solutions and mixtures.

07:22 Review for Remembering Stand up if you have met the lesson outcomes? If not what do you need to do next in order to meet the outcome? Record this in your diary as part of your homework. Is there any part of the lesson you think you need to go over again next lesson? Tell the person next to you three things you have learnt this lesson. How will you remember this for your exam?

Technician’s list Demo 1 – making distilled water Distillation equipment – set up please Wash bottle with distilled water Mineral water bottle Demo 2 – solution or mixture Oil and water in a separating funnel Copper sulphate solution in a beaker – labelled as copper sulphate and water Milk Can of coke White vinegar Sand and water Class Experiment - Reactions using Solutions an Observation Exercise 12x Per group: 5x test tubes and test tube racks Copper sulphate solution Dilute hydrochloric acid Lead nitrate solution Iron (II) sulphate solution (use ferrous ammonium sulphate / ammonium iron (II) sulphate) sodium hydroxide solution 2x 2cm strip of magnesium Potassium iodide solution