This Chemical Sciences unit addresses how changes in state from solid to liquid and liquid to solid can be caused by adding or removing heat.
It consists of 6 lessons of approximately 60 minutes duration.
The sequence of lessons and suggested time frames should be regarded as a guide only; teachers should pace lessons in accordance with the individual learning needs of their class.
An assessment task for monitoring student understanding of the unit objectives is included and will require an additional lesson.
Teachers are encouraged to collect samples of students’ work throughout the unit to add to a learning portfolio. These can also be used to assess students’ understanding of the unit objectives.
This unit plan includes the following resources:
- Solids, Liquids and Gases – Sorting Activity
- Wonder Wall Brainstorming Display Template
- Solids, Liquids and Gases PowerPoint
- Properties of Solids, Liquids and Gases – Worksheet
- Melting and Freezing – Worksheet
- Let’s Experiment! – How Long Will It Take to Melt?
- Science Experiment – How Long Will It Take to Melt?
- Removing Heat – Worksheet
- Recycling Soft Plastics – Worksheet
- Changing States – Worksheet
- To establish that matter can be classified as solid, liquid or gas.
- To explore the properties of solids, liquids and gases.
- To observe how a change of state between solid and liquid can be caused by adding or removing heat.
- To investigate what happens when heat is applied to a range of solids.
- To investigate what happens when heat is removed from a range of liquids.
- To explore how changes from solid to liquid and liquid to solid can help in the process of recycling plastic.
Preparing for Learning
This Science unit provides excellent opportunities for cross-curricular integration. Look for ways to meaningfully integrate the content of the unit with other learning areas e.g. Literacy and Numeracy.
Prior to commencing the unit, develop a classroom display which focuses on states of matter. Display posters, word wall vocabulary and learning goals that the students will engage with throughout the unit to stimulate their learning. For examples of additional teaching resources to display in your classroom, browse the States of Matter collection on the Teach Starter website.
The lessons and science experiments within this unit are structured in accordance with the scientific method. Ensure that the students are familiar with this process before commencing the unit. A comprehensive lesson plan addressing the concepts of fair testing in Science can be downloaded here.
Some of the resources that accompany this unit plan will need to be prepared prior to teaching. For this reason, it is advised that teachers browse through all lessons before commencing the unit.
Australian Curriculum alignment
Science involves making predictions and describing patterns and relationships
Science knowledge helps people to understand the effect of their actions
With guidance, identify questions in familiar contexts that can be investigated scientifically and make predictions based on prior knowledge
With guidance, plan and conduct scientific investigations to find answers to questions, considering the safe use of appropriate materials and equipment
Consider the elements of fair tests and use formal measurements and digital technologies as appropriate, to make and record observations accurately
Use a range of methods including tables and simple column graphs to represent data and to identify patterns and trends
Reflect on investigations, including whether a test was fair or not
Represent and communicate observations, ideas and findings using formal and informal representations
Compare results with predictions, suggesting possible reasons for findings
A change of state between solid and liquid can be caused by adding or removing heatElaborationsinvestigating how liquids and solids respond to changes in temperature, for example water changing to ice, or melting chocolate (Skills: Numeracy, Critical...