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Connector: Copy and complete

CKS3: Yr7 Chemistry Unit 1 – Me the the Scientist! Lesson number: 2. Lesson Title : Working in the Laboratory. Connector: Copy and complete In science we measure liquids in cubic centimetres (cm 3 ). Litres (l) and millilitres (ml). 1000cm 3 = 1l and 1cm 3 = 1ml. Cro2011. BIG picture.

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Connector: Copy and complete

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  1. CKS3: Yr7 Chemistry Unit 1 – Me the the Scientist!Lesson number: 2. Lesson Title: Working in the Laboratory • Connector:Copy and complete In science we measure liquids in cubic centimetres (cm3). Litres (l) and millilitres (ml). 1000cm3 = 1l and 1cm3 = 1ml Cro2011

  2. BIG picture Key Questions: Can I identify, and do I know the how to use laboratory equipment? How is this lesson relevant to every day life? Science skills can be used in every day situations. What skills will you be developing this lesson? HSW- by carrying out an experiment Numeracy- in calculations Literacy- by writing explanations using correctly spelt keywords and good grammar. Team work- during a practical investigation Participation- during a practical activity Reflection- through self and peer assessment of each outcome Quick Discussion: What laboratory equipment do you already know? Make alist with your partner.

  3. New Information for Learning Outcome 1 • Visual: observing & identifying • Audio: listening • Kinaesthetic: handling laboratory equipment

  4. Demonstrate your Learning for Outcome 1

  5. Create Evaluate Analyse Apply Understand Remember Demonstrate your Learning for Outcome 1 I am working at level .... because ........... • Understand (L4) • Can you: • Explain when and why different items of laboratory equipment are used for a specific purpose? • e.g. • a boiling tube, instead of a test tube? • a conical flask instead of a beaker? To get to the next level I need to ........... Remember (L3) Can you: Name and/or Describe common items of laboratory equipment?

  6. Learning Outcome 1: Review To know the names and uses of common items of laboratory equipment. Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.

  7. New Information for Learning Outcome 2 Using a measuring cylinder to measure volume thermometer • To measure a volume of liquid, choose a graduated cylinder that has a maximum capacity similar to the volume you want to measure. • Water in a graduated cylinder curves upward at the edges. This curvature is called the meniscus. Read the volume at the bottom of the meniscus when looking at the cylinder at eye level. • If the volume is between two lines on the cylinder, then estimate the final digit in your measurement. For instance, if the water in the picture was about halfway between 7.0 ml and 7.2 ml, read a volume of 7.1 ml. beaker of water tripod What is the reading on the measuring cylinder below? heat proof mat 6.6

  8. Using a measuring cylinder to measure volume - exercise You’ll need three measuring cylinders: 10ml, 50ml, 100ml., a 250ml beaker of water, and a plastic pipette. Working with a partner measure the following volumes: (one measures, the other checks, then for the next measurement swap.) Now complete the worksheet

  9. Create Evaluate Analyse Apply Understand Remember Demonstrate your Learning for Outcome 2 I am working at level .... because ........... To get to the next level I need to ........... Apply (L5) Were you able to use a measuring cylinder to ACCURATELY measure volume? Understand (L4) Were you able to use a measuring cylinder to measure volume?

  10. Learning Outcome 2: Review To be able to use a measuring cylinder to measure volume Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.

  11. Learning Activities for Outcome 3 • Measuring mass and mass changes. • Electronic mass balances make this easy to do: • Switch on the balance. • Press the zero (or Tare) button. • Place object on the balance. • Read the mass. • Weigh a beaker.

  12. Experiment to measure a mass change. • Wear eye protection. • Put a beaker on the balance and set to zero. • Take a clean empty test tube and use a spatula to add copper carbonate to a maximum of 1/5 full. • Weigh the test tube with the copper carbonate and record the mass. • Use a test tube holder and hold the test-tube at a slight angle making sure that the open end of the test tube isn’t pointing directly at anybody. • Use the heating flame and carefully heat the solid for a few minutes until no further change is seen. • Let the test tube cool then reweigh it.

  13. Experiment to measure a mass change. Results and observations When the green solid was heated ……………….. …… it changed colour and became black. Also it lost mass. Can you suggest a reason for this change? The solid lost mass because a gas was given off.

  14. Create Evaluate Analyse Apply Understand Remember Demonstrate your Learning for Outcome 3 I am working at level .... because ........... To get to the next level I need to ........... Analyse (L6) Did you work out that mass was lost because a gas was given off? Apply (L5) Did you: Complete the experiment? Record both the mass and colour change? Understand (L4) Did you correctly weigh the test tube and solid?

  15. Learning Outcome 3: Review Go back to your Learning Outcome grid and fill out the ‘How I did’ and the ‘Targets’ column. To be able to measure mass and mass changes.

  16. Keywords: Put your hand up if there is any key word from the list that you don’t understand. • test tube • boiling tube • test tube holder • beaker • conical flask • funnel • measuring cylinder • spatula • tongs • plastic pipette • mass balance

  17. 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?

  18. Extended Learning Extended Learning task: Learn the key words from lessons 1 & 2 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.

  19. Technician’s list • 12x • Electronic mass balances • Copper carbonate 2-4g • Matches and splints • Trays with following items • Test tube • Boiling tube • Test tube holder • 250ml Beaker • Conical flask • Funnel • Measuring cylinder (100ml, 50ml, 10ml) • Spatula • Tongs • Plastic pipette (teat pipette) • CKS3 L02 Laboratory Equipment work sheet x24 • Graduated cylinder worksheet x24

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