Quick summary: In this experiment students will participate in or observe a simple experiment to find out whether hot or cold water freezes fastest.
These Snappy Science resources have been created to boost science education in primary schools across Australia. Each lesson is designed to support teachers with the scientific knowledge, ideas and resources to stimulate a sense of wonder and curiosity in their students. Many of the big issues that Australian society will face in the future are around technology, energy, resources and climate change. All of these require students to engage with science – but most of all to enjoy science!
Science at Home: These Snappy Science resources can also be used to engage families in fun science and learning for life. You can download a student friendly version of this activity here and you can also check out the Snappy Science Digital Library.
General capabilities: Critical and creative thinking.
Year 1 Science
- Everyday materials can be physically changed in a variety of ways (ACSSU018)
Year 3 Science
- A change of state between solid and liquid can be caused by adding or removing heat (ACSSU046)
Year 5 Science
- Solids, liquids and gases have different observable properties and behave in different ways (ACSSU077)
Year 6 Science
- Changes to materials can be reversible, such as melting, freezing, evaporating; or irreversible, such as burning and rusting (ACSSU095)
Syllabus outcomes: ST1-12MW, ST2-12MW, ST2-7PW, ST3-12MW.
Time required: 5 minutes for explaining activity and putting cups into the freezer, need to check cups every 15 minutes.
Resources required: Foam cup with cold water, foam cup with same amount of very hot tap water, freezer, clock or timer, pen.
Safety advice: This activity requires very hot water – depending on student age and ability this activity may be either a student-led experiment or a teacher-led demonstration.
Keywords: Hot water, cold water, freeze.
Cool Australia’s curriculum team continually reviews and refines our resources to be in line with changes to the Australian Curriculum.