int_esws_at_7fb_obj_001.pptx for grade 7

grade 7 ppt dalam materi aicdii

1. Objectives Recall examples of everyday substances that are acids and alkalis. Recall the colour changes associated with some common indicators (e.g. litmus, methyl orange and phenolphthalein indicators). Describe how indicators are used to distinguish between acidic, alkaline and neutral solutions . © Pearson Education Ltd 2019. Copying permitted for purchasing institution only. This material is not copyright free.

2. Objectives Use solutions of known acidity/alkalinity in order to deduce a colour chart for an indicator Evaluate the effectiveness of different indicators . © Pearson Education Ltd 2019. Copying permitted for purchasing institution only. This material is not copyright free.