Science / Year 9 / Science Understanding / Chemical sciences

• TLF-IDL2568

Investigate chemical reactions at a molecular level. Break apart molecules of oxygen and another substance into their component atoms and rearrange them to make molecules of new substances. For example, explore how methane burns in oxygen to produce carbon dioxide and water. Work out the number of molecules of each substance ...

• TLF-IDL2573

Investigate chemical reactions at a molecular level. Examine collisions between molecules of two reactants. Adjust the ratios of the reactants and compare the outcomes. Identify the number of molecules involved in a balanced reaction. For example, two A molecules combine with a B2 molecule to form a molecule of A2B2. This ...

• TLF-IDL2569

Investigate chemical reactions at a molecular level. Break apart molecules of two substances into their component atoms and rearrange them to make molecules of new substances. For example, explore how sulfur reacts with hydrogen to produce hydrogen sulfide. Work out the number of molecules of each substance needed to balance ...

• TLF-IDM020101

This is a student guide that takes an in-depth look at chemical reactions with individual chapters on the structure of atoms, chemical changes and formula, radioactivity and nuclear energy, energy changes, and reactions involving acids and bases. Each part or chapter of this resource contains information, images and diagrams, ...

• TLF-IDM016526

Students use this resource consisting of eight slides with diagrams, written explanation and voice-over to understand that pH is a measure of the strength of an acid or alkali and how to interpret the colours of universal indicator solution. There is a two-question quiz and a summary slide.

• TLF-IDM016139

Students use this resource consisting of four slides with diagrams, written explanation and voice-over to understand that metals react with acid to produce salt and hydrogen and find out how to test for hydrogen gas. The reactivity series of metals is demonstrated. There is a two-question quiz and a summary slide.

• TLF-IDM016122

Students use this simulation to learn that react with hydrochloric acid to produce salt and hydrogen and find out how to test for hydrogen gas. The notice that sodium reacts violently and that magnesium reacts more quickly than zinc but that the hydrogen gas test is positive for both. Word equations are provided for all reactions.

• TLF-IDM015910

Follow a carbon atom as the central character in a story about crude oil. Watch as this ancient chemical that has existed since the dawn of time is recycled through all life forms, oceans, rocks and the atmosphere. See the origins of the vast oil fields on which the modern world now depends.

• TLF-IDL11709

Create a presentation that demonstrates what you know about the photosynthesis process, both during the day and at night. Select and position appropriate images and symbols, add text and save your presentation.

• TLF-IDM016394

Students use this resource consisting of nine slides with diagrams, written explanation and voice-over to understand everyday neutralisation reactions. There is a two-question quiz and a summary slide.