DIY pH Indicator

Primary KLA:
Science and Technology
Secondary KLA:
Educational levels:
Year 5, Year 6, Year 7, Year 8, Year 9, Year 10, Year 11, Year 12


resource preview

This resource contains lessons plans containing instructions and teachers 'notes for an activity based on the natural pH indicator present in red cabbage leaves. It can be extracted following these explicit and clear directions included for this activity. This indicator solution changes colour from purple to bright pink to in acids or to vibrant blue or yellow-green when mixed or bases. Background scientific information about pH scales and acids and bases is provided.

NSW syllabus outcomes

(ST3-4WS) investigates by posing questions, including testable questions, making predictions and gathering data to draw evidence-based conclusions and develop explanations

(SC4-6WS) follows a sequence of instructions to safely undertake a range of investigation types, collaboratively and individually

(SC4-7WS) processes and analyses data from a first-hand investigation and secondary sources to identify trends, patterns and relationships, and draw conclusions

(SC4-16CW) describes the observed properties and behaviour of matter, using scientific models and theories about the motion and arrangement of particles

Australian curriculum content descriptions

(ACSSU095) Changes to materials can be reversible, such as melting, freezing, evaporating; or irreversible, such as burning and rusting

(ACSHE098) Science involves testing predictions by gathering data and using evidence to develop explanations of events and phenomena

(ACSIS232) With guidance, pose questions to clarify practical problems or inform a scientific investigation, and predict what the findings of an investigation might be

(ACSIS105) Use equipment and materials safely, identifying potential risks

(ACSIS221) Compare data with predictions and use as evidence in developing explanations

(ACSIS110) Communicate ideas, explanations and processes in a variety of ways, including multi-modal texts

(ACSSU225) Chemical change involves substances reacting to form new substances

(ACSIS140) Collaboratively and individually plan and conduct a range of investigation types, including fieldwork and experiments, ensuring safety and ethical guidelines are followed

(ACSIS145) Summarise data, from students’ own investigations and secondary sources, and use scientific understanding to identify relationships and draw conclusions

More information

Resource type:
Interactive Resource
ScOT topics:
Solutions, Lesson plans
File type:
ABC - Surfing Scientist
Australian Broadcasting Corporation
Date created:
Thursday, 12 November 2009

Resource ID: 35fe2fcc-5b19-46e9-b735-613e16700bb5