Apparatus for Measurements

• Chemistry
• Secondary Education
• Age 12,13

T O   D O   L I S T

• Go to the bathroom (5 minutes before class).
• Record my attendance in Moodle.
• Submit my signed Lab Code of Conduct Agreement.
• Prepare my laptop, books, and writing pen.
• Keep other things unrelated to Chemistry.
• Keep my phone in my locker.
• Period 1 - Lab ; Period 2 - Lec (Room 302).

What should I do first?

IGCSE Chemistry 0620

Topic 1.1 Experimental Design and Measurement

28 August 2023

Describe how you feel right now 

using an emoji.

😒🙁😐🙂😃

• 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 ;
• suggest advantages and disadvantages of experimental methods and apparatus;
• demonstrate knowledge of how to select and safely use techniques, apparatus and materials;

We are learning to:

• demonstrate knowledge and understanding of scientific vocabulary, terminology and conventions (including symbols, quantities and units); and
• demonstrate knowledge and understanding of scientific instruments and apparatus, including techniques of operation and aspects of safety.

We are learning to:

IGCSE Chemistry 0620

Topic 1.1 Experimental Design and Measurement

28 August 2023

Discussion Forum

• What did I learn last time?
• What did I do last session?
• How was my performance?

Previously...

IGCSE Chemistry 0620

Topic 1.1 Experimental Design and Measurement

28 August 2023

Element Quiz 04

T O   D O   L I S T

• Open your laptop.
• Go to https://play.blooket.com/play.
• Enter the code shown and type name.
• Play and learn.

dashboard.blooket.com

IGCSE Chemistry 0620

Topic 1.1 Experimental Design and Measurement

28 August 2023

Measurement of Time

Measurement of Temperature

Measurement of Mass

Measurement of Liquid Volume

• Measuring cylinder - used when high accuracy is not an essential factor.

Measurement of Liquid Volume

• Volumetric pipettes - the most accurate way of measuring a fixed volume of liquid, usually 10 cm3 or 25 cm3

Measurement of Liquid Volume

• Burettes - the most accurate way of measuring a variable volume of liquid between 0 cm3 and 50 cm3 (e.g. in a titration)

Measurement of Gaseous Volume

• Gas syringe - usually the apparatus used to measure the volume of gas

Measurement of Gaseous Volume

• Inverted cylinder - in water may also be used, provided the gas isn't water-soluble

Pros and Cons of Measuring Apparatus

Quiz 2/3: Apparatus for Measurements

T O   D O   L I S T

• Open your laptop.
• Go to your Moodle Account.
• Look for Quiz 2/3 - Experimental Design (Sci 1 & 2) -- No partners.
• Look for Quiz 2/3 - Experimental Design (Sci 1 & 2 With partners).

Self-Assessment for Learning

Reflection 02

T O    D O:

• Identify two ideas you do not understand quite well in our sessions.
• Ask someone who can explain and write the explanations in your notebook.
• Verify your learning from a classmate by sharing it with the teacher.

                                      Ca (g) → Ca+(g)  +  e-                 

• Translate the given equation into a sentence using the key terms: energy, remove, one mole of electrons, gaseous. 

• Share your output with a classmate

Challenge 🏆

T O   D O:

• Using the given chart on the first, second, third, and fourth ionisation energies of elements, construct a bar graph.
• The x-axis is the element in symbol with atomic number, and the y-axis is the first ionisation energy, in kJ mol -.
• Share your graphs with the class.

Activity 12—Bar Graph Making (First ionisation energies of elements from periods 1-3)

• Ionisation energies show periodicity.

Across a period 

- nuclear charge increases

- atomic radius decreases

- shielding remains constant

- gets harder to remove an electron

- ionisation energy increases

Conclusions from the graphs

GROUP 1:

• Danou
• Ratanak
• Chou

PROJECT GROUPINGS

GROUP 2:

• Lisa
• Molina
• Puth

GROUP 3:

• Kimheang
• Phillip
• Sarina
• Morkot

GROUP 4:

• Kimlita
• Chayhong
• Larita
• Visal

GROUP 5:

• Chanlisa
• Vannsak
• Nita
• Kimquech