Science / Year 8 / Science Understanding / Chemical sciences

• TLF-IDA003997

This activity demonstrates how much water expands when frozen. Students quantify water's expansion when it freezes and establish how this can lead to weathering (breakdown) of rocks in areas exposed to frequent freezing and thawing temperatures. It is best to set up the demonstration one day ahead and examine the results ...

• TLF-IDA002838

Water is a precious resource, yet water is also wasted every day. This activity investigates water consumption and how you can reduce the amount of water wasted. OUTCOMES of this learning activity are for students to: understand the urban water cycle; learn different ways to reduce water usage; discover how much water is ...

• TLF-IDA003895

This activity invites students to explore colour chromatography, a technique that uses capillary action to separate different types of ink at different rates. The activity includes a list of tools and materials required, assembly instructions, what to do and notice, an explanation for the underlying science of what students ...

• TLF-IDM025827

In this structured inquiry unit of work students explore the formation of rocks and minerals. They investigate how the properties of rocks and minerals are related to their use, and how these naturally occurring materials provide valuable resources for human activity. Students also investigate the effects of volcanic activity, ...

• TLF-IDM025131

Most people know that vitamins are an essential daily requirement for a healthy life, but few people really know how or why. Vitamins need to be examined individually to understand and appreciate their differences and specific importance to our bodily functions. This lesson plan with supporting video clips, introduces students ...

• TLF-IDM018844

Graphene is perhaps the most significant new material produced in recent years. It has many potential applications in electrical devices, biomedical technology and solar energy. Graphene is a form (allotrope) of carbon with some special chemical and physical properties. Watch this clip to explore the molecular structure, ...

• TLF-IDM016700

A page with downloadable examples, exemplars and advice to help integrate database use in teaching and learning for science. Includes suggestions and reasons for using databases in science, practise activities and information on research and benefits, plus links to a range of related resources.

• TLF-IDM018842

Many natural products, such as red cabbage and turmeric, can be used as a natural source of colour to dye fibres. Watch the dyeing demonstration in this clip to see how. Discover the chemistry of natural dyes, including the bonding properties of different pigments and how acid-base reactions can alter the colour of pH-sensitive ...

• TLF-IDM015780

Imagine the possibilities if we could turn the most abundant element in the universe into a source of fuel. Watch as the Surfing Scientist, Ruben Meerman, investigates the properties of hydrogen and then demonstrates its potential as a fuel when he sets fire to hydrogen-filled soap bubbles.

• TLF-IDM017103

This is a website about the key issues related to global food insecurity. It contains sections on the scarcity of primary resources; land degradation; land scarcity; waste; climate change; consequences of inaction; and proposed solutions. Photographs, statistics, graphs, maps and figures support the information. This resource ...