Science / Year 8 / Science Understanding / Chemical sciences

• TLF-IDM016475

This resource contains lessons plans containing instructions and teachers' notes for an activity based on a chemical reaction that occurs when a soluble aspirin tablet dissolves and the fact that oil and water do not mix are used to create a model of a lava lamp. Students have fun while they learn about density of fluids. ...

• TLF-IDL43

Open the metal door to a treasure chamber by dissolving it with acids. Test everyday substances to identify which are acids: lemon juice, salt water, alcohol, vinegar, water and fizzy soft drink. See if they react with egg shell, litmus paper, sodium bicarbonate or teeth.

• TLF-IDL5819

Measure the pH as you gradually add an acid to a base, or vice versa. Predict the change in pH when you mix acids and bases. Notice that the pH drops or rises quickly when the neutralisation point is almost reached. Remember, all acids and bases including the dilute solutions used in this object, can be harmful and should ...

• TLF-IDM018841

Ever wondered how fireworks are created? In this clip, pyrotechnics expert John Conkling describes the chemical and physical components of fireworks, and demonstrates many coloured explosions in a laboratory. Discover that a fireworks display is a chemical reaction between an oxidiser such as potassium nitrate and a fuel ...

• TLF-IDM018837

Want to know if an egg is rotten, why onions bring on tears and what makes green vegetables turn brown after cooking? Watch this clip to discover the chemistry behind these and other everyday problems. Find out about the chemical reactions, compounds and elements involved, and learn some simple chemistry-inspired solutions.

• TLF-IDM015807

Why are some metals prized more for jewellery than others? Listen to presenter Bernie Hobbs explain the chemical reaction that affects the look and durability of metals. Using the periodic table and some dazzling computer graphics, Bernie demonstrates why 'oxygen-proof, low-reactivity, transition metals' such as gold keep ...

• TLF-IDL8489

Test your understanding of the pH scale by classifying solutions according to whether they are an acid, neutral or a base. Use results from the solutions tested using red litmus paper, blue litmus paper, the indicator phenolphthalein and the addition of a piece of metal (Zn) to help you classify them. Your preliminary classification ...

• TLF-IDM018840

Some magic tricks, such as disappearing ink or candles that won't blow out, can be explained by chemistry. In this clip, three classroom chemistry experiments demonstrate that some familiar magic tricks rely on acid-base chemical reactions, and the properties and behaviour of gases. Watch closely if you've ever wanted to ...

• TLF-IDM014131

This is a teacher guide about states of matter, the particle model and simple chemical equations. It provides an overview of lessons including worksheets and assessment, and is part of a comprehensive curriculum resource that covers Chemical sciences content descriptions in year 8 of the science curriculum. The resource ...

• TLF-IDM016663

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 ...