The factors affecting rates of chemical reactions

The notes for this part of the course will help you with the homework activities.   Homework activity due in Thursday 24 March period 1. Answers can be taken  from the course notes in the presentation. The homework is designed  to allow you to practise answering questions on this topic using the correct chemical language. Link […]

Acids and bases AS 90944

Properties of acids Weak acids have a sour taste Acids change the colour of indicators such as phenolphthalein, litmus and universal indicator. Acids react with certain metals to form hydrogen gas (zinc, magnesium, aluminium ,iron and other reactive metals but not copper) and a salt Acids react with carbonates and hydogen carbonates (old fashioned name […]

Year 9 Science: Living things.

Have a look at the notes on Mrs Gren Try to answer these questions Nutrition is different for plants and animals. Can you explain why? What is a tendril Respiration is not the same as breathing. Can you explain? This is a difficult one. Wasps eat Monarch caterpillars in early summer because they need protein. […]

Making hydrogen and doing the pop test again

Another clip from yesterday’s activity. Great effort taking particular care with eye protection in the lab. Well done boys, very professional. Hydrogen is a light gas. It can be collected in an upturned test tube We can make small samples by dropping a reactive metal such as magnesium into dilute hydrochloric or sulphuric acids. Mixtures […]

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