Starter – think about these questions, you can jot ideas in the back of your book! What is an acid? What is an alkali? What is the difference between an base and an alkali? What does neutral mean? What is neutralisation?

Objectives To understand and be able to use key science words (acid, alkali, neutral, base and neutralisation). To know the general equation for neutralisation and be able to use this to generate specific equations. To be able to add details onto a data logged graph of neutralisation.

pH scale 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Use the interactive whiteboard pens to annotate the pH scale with example of household items with their pH, acid, alkali and neutral.

Neutralisation Measure 20cm3 of hydrochloric acid into a beaker. Add a few drops of UI soln. Using a pipette, add sodium hydroxide to the acid. Observe. Allow small groups of students to complete this as an egg race and give the first team a prose for getting a neutral solution.

Set up the data logger Log onto the computer. Take a temperature probe and put it into the USB drive. Take the pH probe and put it into the USB drive. Start, programmes, Vernier Software, LoggerPro 3.4.2.

Neutralisation Measure 30ml of HCl into a beaker. Add a little squirt of UI soln. Put the probe into the ice. Start collecting the data. Add NaOH slowly until you have added 35ml. Stop collecting the data and autoscale. Print your graph.

Neutralisation Mark in red pen where the graph is acid. Mark in blue pen where the graph is basic. Make in green pen where neutralisation happens. Contrast the temperature and the pH graph – what do they show you? Use the interactive pens to annotate the graph if students require further clarification on the task. pH Time

Which of these are acids? Click on the answer they think is correct.

Which is true? All alkalis have a pH <7 All alkalis have a pH >7 Click on the answer they think is correct. 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Which of these is neutral? Click on the answer they think is correct.

What is made is made when an acid and alkali react? Water Salt and water Carbon dioxide, salt and water Click on the answer they think is correct.

Which of these is an alkali? Click on the answer they think is correct.

Which one of the following do alkalis and bases not have in common? They are the opposites to acids They have a pH greater than 7 They dissolve in water Click on the answer they think is correct.

Which is the formula for phosphoric acid? H3PO4 HPO4 Click on the answer they think is correct.

What is the name of the salt produced when sodium hydroxide reacts with nitric acid? Table salt Sodium chloride Sodium nitrate Click on the answer they think is correct.

What type of medicine is a cure for indigestion? Antacid Strong alkali Milk Neutral Click on the answer they think is correct.

Well done!

Try again! Click onto the action button to return to the question and select a different answer.