Learning Objective

In this lesson we will learn the rules for drawing scientific diagrams and how to draw some common pieces of laboratory equipment.

Learning Outcomes

By the end of this lesson you will be able to:

  • Draw and label scientific diagrams, according to a set of rules.

  • Draw scientific diagrams of common laboratory equipment.

 

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Introduction

  • Scientific diagrams are designed to be simple, clear representations of scientific equipment and experiments.
    They need to convey information in a way that can be easily interpreted by others.

 
student drawing scientific diagram

(Image: OpenClipart-Vectors, Pixabay)

 

Rules for Drawing Scientific Diagrams

  • Scientific diagrams are not intended to be ‘real life’ drawings, so you don’t need to be a great artist to create them.
    You do, however, need to follow several rules when drawing them.

 

Rule #1

  • Use a sharp lead pencil.
    Don’t use a pen.
    Don’t use a coloured pencil.
    Don’t use a blunt pencil.

 
scientific diagrams sharp lead pencil

(Images: Free-Photos, Pixabay; radekkulupa, Pixabay; LeoNeoBoy, Pixabay)

 

Rule #2

  • Draw objects in two dimensions.
    Don’t draw in 3D.

 
scientific diagrams two dimensions

 

Rule #3

  • Draw clean, single lines.
    Don’t draw sketchy lines.

 
scientific diagrams clean lines

 

Rule #4

  • Don’t close off openings of glassware.

 
scientific diagrams open glassware

 

Rule #5

  • Use a ruler to draw straight lines.
    Don’t draw lines freehand.

 
scientific diagrams straight lines

 

Rule #6

  • Don’t shade or colour in.
    They might look nicer coloured in, but scientific diagrams need to be clear and simple.

 
scientific diagrams no shading or colouring in

 

Rule #7

  • Don’t ‘float’ objects.
    If objects are in contact with each other, show it in the diagram.

 
scientific diagrams don't float objects

 

Rule #8

  • Label objects with straight lines.
    Don’t use arrow heads.
    Avoid crossing over lines.

 
scientific diagrams labelling

 

Drawing Laboratory Equipment

  • The following scientific diagrams show how to draw some common laboratory equipment.

 

Beaker

 
scientific diagram beaker

(Left image: Lilly_M, Wikimedia Commons)

 

Conical Flask

 
scientific diagram conical flask

(Left image: Lucasbosch, Wikimedia Commons)

 

Measuring Cylinder

 

scientific-diagram measuring cylinder

(Left image: Lilly_M, Wikimedia Commons)

 

Test Tube

 

scientific diagram test tube

(Left image: imagedb.com, Adobe Stock)

 

Glass Funnel

 

scientific diagram glass funnel

(Left image: benvenutik, Adobe Stock)

 

Round-Bottom Flask

 

scientific diagram round bottom flask

(Left image: Lilly_M, Wikimedia Commons)

 

Glass Rod

 

scientific diagram glass rod

(Left image: TarnPraewan, Wikimedia Commons)

 

Watch Glass

 

scientific diagram watch glass

(Left image: Ilja, Wikimedia Commons)

 

Bunsen Burner

 

scientific diagram bunsen burner

(Left image: Polimerek, Wikimedia Commons)

 

Tripod

 

scientific-diagram-tripod

(Left image: NagayaS, Wikimedia Commons)

 

Wire Gauze

 

scientific diagram wire gauze

(Left image: tammcd, Pixabay)

 

Retort Stand, Bosshead and Clamp

 

scientific diagram retort stand bosshead and clamp

(Left image: Tsaenmai, Wikimedia Commons)

 

Evaporating Dish

 

scientific diagram evaporating dish

(Left image: Simon A. Eugster, Wikimedia Commons)

 

Crucible

 

scientific diagram crucible

(Left image: Good Science)

 

Pipeclay Triangle

 

scientific diagram pipeclay triangle

(Left image: Good Science)

 

Safety Mat

 

scientific diagram safety mat

(Left image: Good Science)

 

Summary

  • Scientific diagrams are a systematic way of representing scientific equipment and experiments in a simple and clear manner.
    They are drawn according to a set of rules:
    1. Use a sharp lead pencil.
    2. Draw objects in two dimensions.
    3. Draw clean, single lines.
    4. Don’t close off openings of glassware.
    5. Use a ruler to draw straight lines.
    6. Don’t shade or colour in.
    7. Don’t ‘float’ objects.
    8. Label objects with simple straight lines.

 
drawing scientific laboratory diagrams

 
 

BUY THE WORKSHEET FOR THIS LESSON

 

BUY THE YEAR 7 CHEMISTRY WORKBOOK

 

(Header image: Hanna, Adobe Stock)