10S1 Lesson 5/6 - Measurement/Experimental design

Lesson 1 - What is IGCSE Chemistry?
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ChemistrySecondary Education

This lesson contains 43 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 55 min

Items in this lesson

Lesson 1 - What is IGCSE Chemistry?

Slide 1 - Slide

  1. Name appropriate apparatus for the measurement of time, temperature, mass and volume, including (a) stopwatches,(b) thermometers, (c) balances, (d) burettes, (e) volumetric pipettes, (f) measuring cylinders, (g) gas syringes
  2. Suggest advantages and disadvantages of experimental methods and apparatus

Slide 2 - Slide

Slide 3 - Slide

Daily Review
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  • (a) Identify the number of significant figures in each measurement.
  • (b) Name the apparatus or
  • (c) Write the measurement reading.
The clock's ticking!

Slide 4 - Slide


How many significant digits are there in this measurement:  0.0507 dm3  ?
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Slide 5 - Open question


How many significant digits are there in this measurement:  0.0000005 dm3  ?
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Slide 6 - Open question


How many significant digits are there in this measurement: 2400 min ?
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Slide 7 - Open question


How many significant digits are there in this measurement:  9.776 g ?
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Slide 8 - Open question


How many significant digits are there in this measurement:  20008 cm3 ?
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Slide 9 - Open question


Name this apparatus.

Slide 10 - Open question


Name these apparatuses.

Slide 11 - Open question


What is the reading on the burette?

Slide 12 - Open question


What is the reading on the burette?

Slide 13 - Open question


What is the reading on the measuring cylinder?

Slide 14 - Open question


What is the reading on the measuring cylinder?

Slide 15 - Open question


What is the reading on the thermometer?

Slide 16 - Open question


What is the reading on the stopwatch in s?

Slide 17 - Open question

Slide 18 - Slide

Volumetric pipette or graduated pipette
10.0 cm3
25.0 cm3
Burette 
(variable volumes)
50.0 cm3
Measuring cylinder
Usually used in titrations

Slide 19 - Slide

Volumetric pipette or graduated pipette
10.0 cm3
25.0 cm3
Burette 
(variable volumes)
50.0 cm3
Measuring cylinder
Usually used in titrations

Slide 20 - Slide

Uncertainty
  • All measurements involve uncertainty.
  • All measurement's last digit is always an estimate.
  • The digits that you record when you measure something are called significant digits.

Ruler A:   4.2 cm or 4.3 cm?
Ruler B:   4.27 cm or 4.28 cm?
Accuracy up to 1 cm
Accuracy up to 0.1 cm

Slide 21 - Slide

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Slide 22 - Slide

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Slide 23 - Slide

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Slide 24 - Slide

Lesson 1 - What is IGCSE Chemistry?

Slide 25 - Slide

Daily Review
  • Arrange the correct order of the steps using the scientific method.
  • Share or give your feedback.

Slide 26 - Slide

Slide 27 - Link

Daily Review
  • Arrange the correct order of the steps using the scientific method.
  • Share or give your feedback.

Slide 28 - Slide

Slide 29 - Slide

Designing an Investigation

  • Identify the independent variable and the values you plan to use for it
  • Identify the dependent variable and the method to be used to measure it
  • Suggest how you will control variables
  • Suggest the most appropriate apparatus and techniques
  • Outline the experimental procedure in a series of numbered steps
  • Identify risks and describe any safety precautions
  • Record and analyse the results or data
  • Trials or repeat readings and sources of error
  • Make your conclusion
  • Share your findings with others

Slide 30 - Slide

Experimental design
  • Read the essential points of a good experimental design.
  • Highlight the sentence or line in the sample investigation of the points you can find.
  • Answer the given questions.
  • Create a slide presentation containing the explanation for your answers.

Slide 31 - Slide

Slide 32 - Link

Designing an Investigation

  • Identify the independent variable and the values you plan to use for it
  • Identify the dependent variable and the method to be used to measure it
  • Suggest how you will control variables
  • Suggest the most appropriate apparatus and techniques
  • Outline the experimental procedure in a series of numbered steps
  • Identify risks and describe any safety precautions
  • Record and analyse the results or data
  • Trials or repeat readings and sources of error
  • Make your conclusion
  • Share your findings with others
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Slide 33 - Slide

1

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Slide 35 - Slide

Lesson 1 - What is IGCSE Chemistry?

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2

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Slide 40 - Slide

Summary
  • Read measurements using apparatuses
  • Wrote and recorded measurements properly
  • Reviewed the SI quantities and units
  • Did unit conversions
  • How to know the certain and uncertain digits in a measurement
  • Identified the number of significant digits in the recorded measurements

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Slide 42 - Slide

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